 HELSINKI    1904     JANUARY                                        HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1504                               1550                               1441                  1498
 02                                  1597                               1597                               1789                  1661
 03                                  1565                               1617                               1617                  1600
 04                                  1612                               1736                               1575                  1641
 05                                  1492                               1602                               1581                  1558

 06                                  1545                               1660                               1634                  1613
 07                                  1576                               1602                               1405                  1528
 08                                  1592                               1691                               1670                  1651
 09                                  1613                               1779                               1629                  1674
 10                                  1499                               1618                               1577                  1565

 11                                  1624                               1635                               1541                  1600
 12                                  1519                               1508                               1706                  1578
 13                                  1597                               1665                               1727                  1663
 14                                  1603                               1743                               1743                  1696
 15                                  1635                               1635                               1656                  1642

 16                                  1604                               1344                               1224                  1391
 17                                  1494                               1582                               1504                  1527
 18                                  1566                               1457                               1629                  1551
 19                                  1488                               1572                               1556                  1539
 20                                  1577                               1592                               1582                  1584

 21                                  1592                               1488                               1618                  1566
 22                                  1389                               1623                               1067                  1360
 23                                  1457                               1478                               1629                  1521
 24                                  1488                               1566                               1623                  1559
 25                                  1592                               1722                               1701                  1672

 26                                  1670                               1618                               1753                  1680
 27                                  1649                               1769                               1764                  1727
 28                                  1696                               1618                               1426                  1580
 29                                  1545                               1426                               1556                  1509
 30                                  1577                               1696                               1566                  1613
 31                                  1545                               1353                               1577                  1492

 Mean 
 ALL                                 1565                               1598                               1583                  1582
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     FEBRUARY                                       HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1702                               1286                               2086                  1691
 02                                  1639                               1291                               1701                  1544
 03                                  1541                               1510                               1531                  1527
 04                                  1619                               1557                               1323                  1500
 05                                  1620                               1521                               1531                  1557

 06                                  1583                               1557                               1572                  1571
 07                                  1562                               1630                               1370                  1521
 08                                  1582                               1566                               1577                  1575
 09                                  1582                               1571                               1800                  1651
 10                                  1602                               1618                               1706                  1642

 11                                  1561                               1499                               1566                  1542
 12                                  1608                               1582                               1634                  1608
 13                                  1670                               1551                               1514                  1578
 14                                  1681                               1588                               1619                  1629
 15                                  1633                               1591                               1690                  1638

 16                                  1404                               1545                               1623                  1524
 17                                  1706                               1461                               1612                  1593
 18                                  1612                               1669                               1633                  1638
 19                                  1638                               1622                               1669                  1643
 20                                  1638                               1544                               1643                  1608

 21                                  1618                               1545                               1675                  1613
 22                                  1638                               1565                               1607                  1603
 23                                  1675                               1607                               1612                  1631
 24                                  1669                               1669                               1669                  1669
 25                                  1717                               1649                               1748                  1705

 26                                  1608                               1541                               1691                  1613
 27                                  1691                               1686                               1727                  1701
 28                                  1724                               1646                               1677                  1682
 29                                  1672                               1692                               1474                  1613
                                                                                                                                     
                                                                                                                                     

 Mean 
 ALL                                 1627                               1564                               1630                  1607
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1904     MARCH                                          HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1630                               1708                               1422                  1587
 02                                  1672                               1474                               1677                  1608
 03                                  1708                               1630                               1562                  1633
 04                                  1708                               1594                               1573                  1625
 05                                  1457                               1598                               1624                  1560

 06                                  1588                               1583                               1713                  1628
 07                                  1520                               1645                               1712                  1626
 08                                  1603                               1504                               1588                  1565
 09                                  1597                               1587                               1701                  1628
 10                                  1534                               1638                               1690                  1621

 11                                  1669                               1659                               1737                  1688
 12                                  1550                               1602                               1727                  1626
 13                                  1670                               1571                               1732                  1658
 14                                  1503                               1566                               1732                  1600
 15                                  1670                               1597                               1748                  1672

 16                                  1679                               1685                               1737                  1700
 17                                  1638                               1649                               1758                  1682
 18                                  1691                               1613                               1712                  1672
 19                                  1700                               1690                               1810                  1733
 20                                  1769                               1696                               1779                  1748

 21                                  1768                               1633                               1696                  1699
 22                                  1722                               1685                               1815                  1741
 23                                  1664                               1571                               1748                  1661
 24                                  1649                               1561                               1779                  1663
 25                                  1623                               1550                               1815                  1663

 26                                  1383                               1586                               1622                  1530
 27                                  1564                               1601                               1720                  1628
 28                                  1590                               1600                               1740                  1643
 29                                  1617                               1560                               1737                  1638
 30                                  1597                               1576                               1711                  1628
 31                                  1612                               1591                               1835                  1679

 Mean 
 ALL                                 1624                               1607                               1708                  1646
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     APRIL                                          HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1446                               1217                               1586                  1416
 02                                  1409                               1076                               1862                  1449
 03                                  1472                               1414                               1446                  1444
 04                                  1425                               1347                               1545                  1439
 05                                  1467                               1337                               1659                  1488

 06                                  1477                               1389                               1789                  1552
 07                                  1555                               1690                               1680                  1642
 08                                  1539                               1441                               1675                  1552
 09                                  1566                               1482                               1644                  1564
 10                                  1549                               1518                               1877                  1648

 11                                  1503                               1357                               1804                  1555
 12                                  1523                               1518                               1726                  1589
 13                                  1622                               1414                               1747                  1594
 14                                  1596                               1492                               1710                  1599
 15                                  1685                               1404                               1758                  1616

 16                                  1571                               1493                               1768                  1611
 17                                  1649                               1493                               1862                  1668
 18                                  1383                               1648                               1705                  1579
 19                                  1290                               1420                               1544                  1418
 20                                  1514                               1337                               1670                  1507

 21                                  1576                               1545                               1748                  1623
 22                                  1576                               1436                               1675                  1562
 23                                  1529                               1560                               1753                  1614
 24                                  1592                               1472                               1763                  1609
 25                                  1550                               1508                               1727                  1595

 26                                  1535                               1374                               1655                  1521
 27                                  1525                               1525                               1686                  1579
 28                                  1567                               1703                               1786                  1685
 29                                  1685                               1706                               1800                  1730
 30                                  1562                               1593                               1739                  1631
                                                                                                                                     

 Mean 
 ALL                                 1531                               1464                               1713                  1569
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1904     MAY                                            HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1703                               1474                               1760                  1646
 02                                  1452                               1613                               1837                  1634
 03                                  1593                               1712                               1754                  1686
 04                                  1666                               1562                               1864                  1697
 05                                  1692                               1572                               1827                  1697

 06                                  1598                               1432                               1811                  1614
 07                                  1664                               1654                               1774                  1697
 08                                  1634                               1634                               1951                  1740
 09                                  1670                               1670                               1852                  1731
 10                                  1692                               1697                               1780                  1723

 11                                  1609                               1645                               1848                  1701
 12                                  1692                               1712                               1998                  1801
 13                                  1093                               1499                               1608                  1400
 14                                  1285                               1613                               1810                  1569
 15                                  1483                               1509                               1717                  1570

 16                                  1556                               1749                               1785                  1697
 17                                  1707                               1463                               1884                  1685
 18                                  1515                               1665                               1759                  1646
 19                                  1453                               1562                               1947                  1654
 20                                  1536                               1635                               1770                  1647

 21                                  1656                               1661                               1833                  1717
 22                                  1656                               1640                               1828                  1708
 23                                  1644                               1717                               1956                  1772
 24                                  1597                               1555                               1789                  1647
 25                                  1634                               1732                               1852                  1739

 26                                  1660                               1738                               1879                  1759
 27                                  1614                               1697                               1988                  1766
 28                                  1666                               1640                               1817                  1708
 29                                  1516                               1838                               1796                  1717
 30                                  1572                               1687                               1853                  1704
 31                                  1582                               1681                               1889                  1717

 Mean 
 ALL                                 1584                               1634                               1833                  1683
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     JUNE                                           HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1514                               1738                               1993                  1748
 02                                  1592                               1701                               1810                  1701
 03                                  1644                               1633                               1805                  1694
 04                                  1717                               1670                               1821                  1736
 05                                  1682                               1807                               1952                  1814

 06                                  1693                               1464                               1880                  1679
 07                                  1577                               1655                               1874                  1702
 08                                  1572                               1775                               1853                  1733
 09                                  1657                               1647                               1782                  1695
 10                                  1642                               1673                               2006                  1774

 11                                  1631                               1579                               1803                  1671
 12                                  1616                               1725                               1819                  1720
 13                                  1668                               1637                               1876                  1727
 14                                  1678                               1719                               1880                  1759
 15                                  1770                               1531                               1880                  1727

 16                                  1406                               1880                               1724                  1670
 17                                  1364                               1499                               1764                  1542
 18                                  1296                               1624                               1738                  1553
 19                                  1514                               1608                               1722                  1615
 20                                  1530                               1395                               1816                  1580

 21                                  1551                               1519                               1795                  1622
 22                                  1618                               1722                               1816                  1719
 23                                  1561                               1618                               1847                  1675
 24                                  1660                               1701                               1816                  1726
 25                                  1660                               1717                               1858                  1745

 26                                                                     1754                               2045                  1900
 27                                  1620                               1781                               1875                  1759
 28                                  1958                               1698                               1807                  1821
 29                                  1598                               1609                               1765                  1657
 30                                  1572                               1712                               1905                  1730
                                                                                                                                     

 Mean 
 ALL                                 1606                               1660                               1844                  1703
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1904     JULY                                           HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1588                               1738                               2123                  1816
 02                                  1592                               1733                               1941                  1755
 03                                  1576                               1748                               1810                  1711
 04                                  1602                               1556                               1857                  1672
 05                                  1675                               1612                               1815                  1701

 06                                  1618                               1441                               2086                  1715
 07                                  1264                               1462                               1732                  1486
 08                                  1483                               1525                               1722                  1577
 09                                  1046                               1556                               1868                  1490
 10                                  1411                               1494                               1749                  1551

 11                                  1598                               1474                               1635                  1569
 12                                  1516                               1521                               1734                  1590
 13                                  1589                               1557                               1921                  1689
 14                                  1504                               1494                               1900                  1633
 15                                  1238                               1550                               1805                  1531

 16                                  1436                               1711                               1763                  1637
 17                                  1518                               1393                               1570                  1494
 18                                  1382                               1315                               1647                  1448
 19                                  1409                               1461                               1721                  1530
 20                                  1550                               1259                               1727                  1512

 21                                  1477                               1446                               1607                  1510
 22                                  1478                               1504                               1644                  1542
 23                                  1448                               1614                               1884                  1649
 24                                  1541                               1588                               1806                  1645
 25                                  1571                               1649                               1863                  1694

 26                                  1551                               1639                               1899                  1696
 27                                  1347                               1545                               1956                  1616
 28                                  1539                               1737                               1804                  1693
 29                                  1570                               1731                               1872                  1724
 30                                  1575                               1512                               1798                  1628
 31                                                                     1491                                                     1491

 Mean 
 ALL                                 1490                               1550                               1809                  1616
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     AUGUST                                         HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1480                               1600                               1751                  1610
 02                                  1610                               1360                               1709                  1560
 03                                  1562                               1447                               1681                  1563
 04                                  1270                               1593                               1889                  1584
 05                                  1421                               1389                               1613                  1474

 06                                  1545                               1504                               1717                  1589
 07                                  1540                               1602                               1665                  1602
 08                                  1483                               1743                               1556                  1594
 09                                  1318                               1796                               1859                  1658
 10                                  1506                               1615                               1792                  1638

 11                                  1569                               1704                               1782                  1685
 12                                  1579                               1688                               1824                  1697
 13                                  1643                               1648                               1825                  1705
 14                                  1581                               1639                               1795                  1672
 15                                  1587                               1540                               1878                  1668

 16                                  1665                               1816                               1769                  1750
 17                                  1619                               1718                               1692                  1676
 18                                  1604                               1770                               1723                  1699
 19                                  1536                               1536                               1707                  1593
 20                                  1645                               1671                               1879                  1732

 21                                  1697                               1588                               1791                  1692
 22                                  1495                               1599                               1817                  1637
 23                                  1490                               1635                               1843                  1656
 24                                  1588                               1630                               1744                  1654
 25                                  1542                               1729                               1797                  1689

 26                                  1537                               1704                               1683                  1641
 27                                  1652                               1668                               1840                  1720
 28                                  1554                               1627                               1809                  1663
 29                                  1674                               1611                               1871                  1719
 30                                  1659                               1534                               1575                  1589
 31                                  1508                               1513                               1711                  1577

 Mean 
 ALL                                 1554                               1620                               1761                  1645
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1904     SEPTEMBER                                      HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1694                               1444                               1720                  1619
 02                                  1629                               1416                               1702                  1582
 03                                  1633                               1612                               1695                  1647
 04                                  1597                               1623                               1737                  1652
 05                                  1623                               1685                               1690                  1666

 06                                  1430                               1430                               1648                  1503
 07                                  1482                               1674                               1721                  1626
 08                                  1689                               1481                               1736                  1635
 09                                  1502                               1549                               1632                  1561
 10                                  1570                               1538                               1700                  1603

 11                                  1513                               1586                               1555                  1551
 12                                  1498                               1789                               1649                  1645
 13                                  1442                               1634                               1696                  1591
 14                                  1540                               1447                               1753                  1580
 15                                  1592                               1520                               1722                  1611

 16                                  1696                               1561                               1623                  1627
 17                                  1493                               1498                               1743                  1578
 18                                  1472                               1540                               1717                  1576
 19                                  1592                               1582                               1670                  1615
 20                                  1509                               1607                               1654                  1590

 21                                                                     1613                                                     1613
 22                                  1587                               1535                               1732                  1618
 23                                  1587                               1608                               1696                  1630
 24                                  1540                               1535                                                     1538
 25                                  1134                               1571                               1696                  1467

 26                                  1488                               1207                               1586                  1427
 27                                  1472                               1373                               1654                  1500
 28                                  1493                               1415                               1628                  1512
 29                                  1540                               1451                               1690                  1560
 30                                  1540                               1758                               1691                  1663
                                                                                                                                     

 Mean 
 ALL                                 1537                               1543                               1683                  1588
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     OCTOBER                                        HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1514                               1477                               1654                  1548
 02                                  1607                               1493                               1649                  1583
 03                                  1550                               1721                               1612                  1628
 04                                  1612                               1508                               1623                  1581
 05                                  1524                               1415                               1555                  1498

 06                                  1618                               1425                               1748                  1597
 07                                  1732                               1498                               1472                  1567
 08                                  1514                               1457                               1488                  1486
 09                                  1462                               1524                               1457                  1481
 10                                  1441                               1608                               1587                  1545

 11                                  1535                               1519                               1686                  1580
 12                                  1546                               1567                               1629                  1581
 13                                  1593                               1556                               1593                  1581
 14                                  1467                               1436                               1576                  1493
 15                                  1456                               1618                               1649                  1574

 16                                  1586                               1362                               1612                  1520
 17                                  1560                               1591                               1664                  1605
 18                                  1612                               1544                               1700                  1619
 19                                  1576                               1534                               1659                  1590
 20                                  1577                               1415                               1795                  1596

 21                                  1655                               1577                               1562                  1598
 22                                  1473                               1546                               1411                  1477
 23                                  1515                               1572                               1603                  1563
 24                                  1551                               1514                               1650                  1572
 25                                  1603                               1629                               1748                  1660

 26                                  1591                               1539                               1727                  1619
 27                                  1638                               1399                               1706                  1581
 28                                  1659                               1331                               1706                  1565
 29                                  1576                               1597                               1587                  1587
 30                                  1566                               1488                               1530                  1528
 31                                  1582                               1566                               1680                  1609

 Mean 
 ALL                                 1564                               1517                               1623                  1568
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1904     NOVEMBER                                       HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1576                               1519                               1530                  1542
 02                                  1592                               1659                               1685                  1645
 03                                  1597                               1540                               1665                  1601
 04                                  1639                               1457                               1504                  1533
 05                                  1494                               1764                               1499                  1586

 06                                  1530                               1421                               1592                  1514
 07                                  1566                               1472                               1613                  1550
 08                                  1576                               1535                               1649                  1587
 09                                  1618                               1566                               1649                  1611
 10                                  1592                               1592                               1628                  1604

 11                                  1576                               1602                               1701                  1626
 12                                  1660                               1566                               1722                  1649
 13                                  1592                               1654                               1696                  1647
 14                                  1581                               1675                               1784                  1680
 15                                  1591                               1627                               1664                  1627

 16                                  1097                               1492                               1706                  1432
 17                                  1306                               1498                               1540                  1448
 18                                  1442                               1322                               1603                  1456
 19                                  1510                               1614                               1624                  1583
 20                                  1509                               1603                               1671                  1594

 21                                  1567                               1619                               1624                  1603
 22                                  1691                               1561                               1696                  1649
 23                                  1587                               1603                               1649                  1613
 24                                  1550                               1628                               1649                  1609
 25                                  1613                               1208                               1535                  1452

 26                                  1504                               1519                               1483                  1502
 27                                  1603                               1608                               1478                  1563
 28                                  1499                               1603                               1650                  1584
 29                                  1619                               1489                               1661                  1590
 30                                  1598                               1666                               1713                  1659
                                                                                                                                     

 Mean 
 ALL                                 1549                               1556                               1629                  1578
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1904     DECEMBER                                       HOURLY MEANS OF HORIZONTAL INTENSITY  =  156000 + TABULAR VALUES
                                                                                                                          ( 0.1  nT )

 Hour    0    1    2    3    4    5    6    7    8    9   10   11   12   13   14   15   16   17   18   19   20   21   22   23    Mean
 Day
 01                                  1671                               1458                               1588                  1572
 02                                  1629                               1624                               1723                  1659
 03                                  1779                               1332                               1540                  1550
 04                                  1529                               1597                               1529                  1552
 05                                  1581                               1445                               1404                  1477

 06                                  1565                               1555                               1628                  1583
 07                                  1529                               1534                               1607                  1557
 08                                  1581                               1638                               1607                  1609
 09                                  1654                               1519                               1072                  1415
 10                                  1503                               1472                               1597                  1524

 11                                  1555                               1550                               1529                  1545
 12                                  1545                               1597                               1623                  1588
 13                                  1618                               1613                               1655                  1629
 14                                  1623                               1587                               1524                  1578
 15                                  1566                               1560                               1607                  1578

 16                                  1639                               1477                               1977                  1698
 17                                  1529                               1503                               1602                  1545
 18                                  1544                               1534                               1492                  1523
 19                                  1571                               1529                               1633                  1578
 20                                  1499                               1593                               1624                  1572

 21                                  1535                               1389                               1571                  1498
 22                                  1483                               1607                               1639                  1576
 23                                  1576                               1670                               1628                  1625
 24                                  1638                               1680                               1747                  1688
 25                                  1675                               1670                               1717                  1687

 26                                  1602                               1597                               1706                  1635
 27                                  1583                               1681                               1624                  1629
 28                                  1484                               1640                               1629                  1584
 29                                  1613                               1566                               1639                  1606
 30                                  1509                               1597                               1602                  1569
 31                                  1565                               1680                                                     1623

 Mean 
 ALL                                 1580                               1564                               1602                  1582
 QUIET                                                                                                                               
 DIST.                                                                                                                               
