 HELSINKI    1898     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                                   749                                822                                890                   820
 02                                   838                                807                                890                   845
 03                                   890                                854                                942                   895
 04                                   953                                953                                916                   941
 05                                   937                                927                                927                   930

 06                                   937                                958                                932                   942
 07                                   968                                927                                937                   944
 08                                  1051                                963                                952                   989
 09                                   973                                901                                921                   932
 10                                  1031                                953                                610                   865

 11                                  1046                                817                                869                   911
 12                                   947                                765                                864                   859
 13                                   921                                843                                941                   902
 14                                  1009                                957                                957                   974
 15                                   942                                983                                884                   936

 16                                  1145                                770                                760                   892
 17                                   744                                750                                770                   755
 18                                   874                                775                                765                   805
 19                                   874                                739                                853                   822
 20                                   895                                905                                786                   862

 21                                   843                                895                                687                   808
 22                                   885                                937                                921                   914
 23                                   937                                921                                937                   932
 24                                  1015                                942                                958                   972
 25                                   999                                895                                905                   933

 26                                  1024                                910                                936                   957
 27                                   946                                868                                920                   911
 28                                   915                                811                                900                   875
 29                                   890                                906                                833                   876
 30                                   895                                875                                984                   918
 31                                   922                                875                                942                   913

 Mean 
 ALL                                  935                                878                                880                   898
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   948                               1021                                974                   981
 02                                   984                                927                                974                   962
 03                                   958                                943                                901                   934
 04                                  1005                                953                               1005                   988
 05                                  1005                                995                                948                   983

 06                                   895                                880                                838                   871
 07                                   916                                936                                916                   923
 08                                   982                                967                                910                   953
 09                                   942                                869                                942                   918
 10                                  1013                               1034                               1003                  1017

 11                                   966                               1013                                716                   898
 12                                   904                                633                               1023                   853
 13                                   899                                894                               1035                   943
 14                                   848                                754                                479                   694
 15                                   760                                807                                921                   829

 16                                   854                                677                                947                   826
 17                                   880                                854                                787                   840
 18                                   844                                870                                917                   877
 19                                   745                                916                                901                   854
 20                                  1000                                979                                844                   941

 21                                   938                                803                                782                   841
 22                                   948                                740                                891                   860
 23                                   942                                911                                963                   939
 24                                   979                                896                                912                   929
 25                                   912                                865                                959                   912

 26                                   979                                875                                938                   931
 27                                  1001                                923                                985                   970
 28                                   996                                949                               1001                   982
                                                                                                                                     
                                                                                                                                     
                                                                                                                                     

 Mean 
 ALL                                  930                                889                                908                   909
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1898     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                                  1006                                886                                996                   963
 02                                   974                                787                                823                   861
 03                                   907                                798                                902                   869
 04                                   928                                824                                964                   905
 05                                   954                                902                                855                   904

 06                                   948                                688                                902                   846
 07                                   896                                839                                938                   891
 08                                   958                                875                               1000                   944
 09                                   943                                901                                943                   929
 10                                  1005                                802                                776                   861

 11                                  1114                                839                                948                   967
 12                                   745                                776                                849                   790
 13                                   917                                881                               1141                   980
 14                                   933                                834                                943                   903
 15                                   948                                823                              -1070                   234

 16                                  -102                                756                                501                   385
 17                                   575                                601                                725                   634
 18                                   861                                772                                757                   797
 19                                   850                                450                                949                   750
 20                                   673                                829                                866                   789

 21                                   798                                741                                876                   805
 22                                   902                                730                                902                   845
 23                                   839                                793                                949                   860
 24                                   912                                772                                918                   867
 25                                   834                                730                                896                   820

 26                                   880                                901                                984                   922
 27                                   917                                750                               1005                   891
 28                                   985                                693                                948                   875
 29                                   902                                751                                943                   865
 30                                   948                                885                                942                   925
 31                                   870                                901                               1026                   932

 Mean 
 ALL                                  865                                791                                842                   833
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   906                                870                                995                   924
 02                                   901                                890                               1020                   937
 03                                   973                                911                               1025                   970
 04                                  1063                                891                                683                   879
 05                                   912                                808                                944                   888

 06                                   866                                741                                881                   829
 07                                  1011                                845                                746                   867
 08                                   600                                881                                865                   782
 09                                   756                                745                                958                   820
 10                                   760                                682                                963                   802

 11                                   896                                823                                969                   896
 12                                   875                                979                               1026                   960
 13                                   662                                745                                948                   785
 14                                   963                                610                                937                   837
 15                                   969                                797                               1078                   948

 16                                   943                                813                               1031                   929
 17                                   896                                881                                912                   896
 18                                   891                                854                               1036                   927
 19                                   906                                854                               1005                   922
 20                                   943                                938                               1037                   973

 21                                   923                                928                               1032                   961
 22                                   938                                959                               1052                   983
 23                                  1031                                901                                968                   967
 24                                   916                                910                               1243                  1023
 25                                   926                                931                               1025                   961

 26                                   854                                890                               1093                   946
 27                                   968                                843                               1462                  1091
 28                                   968                                760                               1072                   933
 29                                   979                                828                               1114                   974
 30                                   968                                698                               1119                   928
                                                                                                                                     

 Mean 
 ALL                                  905                                840                               1008                   918
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1898     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                                   880                                932                               1093                   968
 02                                   854                                822                               1015                   897
 03                                   999                                895                               1082                   992
 04                                   755                                605                                875                   745
 05                                   776                                786                                895                   819

 06                                   900                                921                                978                   933
 07                                   817                                724                               1015                   852
 08                                   917                                844                                963                   908
 09                                   943                                974                               1047                   988
 10                                   995                                943                               1073                  1004

 11                                   922                                813                               1104                   946
 12                                   786                                786                               1072                   881
 13                                   823                                864                               1000                   896
 14                                   885                                901                                615                   800
 15                                   812                                895                               1056                   921

 16                                   806                                842                               1040                   896
 17                                   936                                852                               1071                   953
 18                                   951                                910                               1113                   991
 19                                   785                                811                               1123                   906
 20                                   941                               1008                                660                   870

 21                                   878                               1013                               1086                   992
 22                                   972                                951                               1159                  1027
 23                                  1014                                790                               1102                   969
 24                                   983                                905                               1113                  1000
 25                                   979                               1046                               1104                  1043

 26                                   927                                927                               1151                  1002
 27                                   999                                781                               1213                   998
 28                                   947                                895                               1077                   973
 29                                   974                                782                               1182                   979
 30                                   674                                700                                928                   767
 31                                                                      684                               1074                   879

 Mean 
 ALL                                  894                                858                               1035                   929
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   834                                896                               1052                   927
 02                                   906                                854                               1067                   942
 03                                   879                                910                               1092                   960
 04                                   817                                                                  1040                   928
 05                                   863                                853                               1066                   927

 06                                   910                                785                               1133                   943
 07                                   712                               1138                                904                   918
 08                                   789                               1023                               1085                   966
 09                                   794                                763                               1038                   865
 10                                   918                                756                               1120                   931

 11                                   901                                901                               1151                   984
 12                                   891                                875                               1093                   953
 13                                   916                                875                               1083                   958
 14                                   864                                869                               1114                   949
 15                                  1099                               1317                               1073                  1163

 16                                   865                                813                               1052                   910
 17                                   860                                933                               1026                   940
 18                                   787                                860                               1047                   898
 19                                   944                                949                               1053                   982
 20                                   857                                899                               1075                   944

 21                                   910                                832                               1066                   936
 22                                   925                                847                               1097                   956
 23                                   946                                837                                998                   927
 24                                   832                                858                               1316                  1002
 25                                   864                                827                               1165                   952

 26                                   900                                864                                962                   909
 27                                   411                                723                                884                   673
 28                                   654                                732                               1065                   817
 29                                   763                                726                               1283                   924
 30                                   580                                772                               1110                   821
                                                                                                                                     

 Mean 
 ALL                                  840                                872                               1077                   930
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1898     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                                   772                                840                                991                   868
 02                                   767                                856                               1027                   883
 03                                   871                                913                               1100                   961
 04                                   897                                767                               1017                   894
 05                                   912                                777                               1027                   905

 06                                   798                                902                               1099                   933
 07                                   828                                792                               1151                   924
 08                                   833                                662                                958                   818
 09                                   802                                844                                942                   863
 10                                   817                                895                                958                   890

 11                                   910                                838                               1051                   933
 12                                   885                                641                               1135                   887
 13                                   875                                417                               1109                   800
 14                                   926                                843                               1004                   924
 15                                   791                                828                               1005                   875

 16                                   844                                813                               1016                   891
 17                                   923                                954                               1043                   973
 18                                   892                                877                               1012                   927
 19                                   908                                929                               1184                  1007
 20                                   357                                825                                939                   707

 21                                   710                                830                               1152                   897
 22                                   341                                455                               1267                   688
 23                                   819                                866                               1256                   980
 24                                   658                                747                                898                   768
 25                                   810                                778                                888                   825

 26                                   753                                820                               1086                   886
 27                                   857                               1018                                982                   952
 28                                   758                                763                                966                   829
 29                                   784                                888                                971                   881
 30                                   799                                                                  1132                   966
 31                                   867                                831                               1054                   917

 Mean 
 ALL                                  799                                807                               1046                   884
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   826                                893                               1065                   928
 02                                   841                                748                               1122                   904
 03                                   810                                950                               1210                   990
 04                                   493                                872                               1018                   794
 05                                   810                                898                               1012                   907

 06                                   893                                700                                758                   784
 07                                   769                                737                                961                   822
 08                                   831                                805                               1086                   907
 09                                   924                                826                               1044                   931
 10                                   892                                741                               1043                   892

 11                                   959                                923                               1032                   971
 12                                   917                                897                                917                   910
 13                                   954                                798                                923                   892
 14                                   834                                814                                938                   862
 15                                   902                                881                               1011                   931

 16                                   870                               1010                               1213                  1031
 17                                   267                                797                                547                   537
 18                                   829                                730                                948                   836
 19                                   705                                815                                929                   816
 20                                   618                                831                                950                   800

 21                                   852                                904                                987                   914
 22                                   831                                764                                909                   835
 23                                   649                                748                                893                   763
 24                                   732                                794                                955                   827
 25                                   841                                841                                913                   865

 26                                   773                                846                                903                   841
 27                                   982                                701                                982                   888
 28                                   893                                935                                872                   900
 29                                   753                                727                                971                   817
 30                                   743                                821                                940                   835
 31                                   847                                873                               1112                   944

 Mean 
 ALL                                  801                                826                                973                   867
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1898     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                                   780                                801                                925                   835
 02                                   806                                796                               1061                   888
 03                                   645                                562                                796                   668
 04                                   698                                677                                880                   752
 05                                   782                                657                                850                   763

 06                                   757                                746                                897                   800
 07                                   757                                690                               1017                   821
 08                                   825                                934                                918                   892
 09                                   757                                                                   175                   466
 10                                   289                                934                                216                   480

 11                                   -45                                496                                538                   330
 12                                   428                                563                                740                   577
 13                                   599                                703                                885                   729
 14                                   587                                634                                546                   589
 15                                   598                                665                                556                   606

 16                                   656                                671                                859                   729
 17                                   817                                619                               1415                   950
 18                                   718                                734                                796                   749
 19                                   697                                702                                770                   723
 20                                   666                                739                                848                   751

 21                                   666                                692                                822                   727
 22                                   780                                759                               1077                   872
 23                                   744                                468                                926                   713
 24                                   864                                859                                682                   802
 25                                   761                                600                                719                   693

 26                                   813                                662                                834                   770
 27                                   886                                724                                953                   854
 28                                   641                                755                                501                   632
 29                                   713                                651                                755                   706
 30                                   703                                703                                723                   710
                                                                                                                                     

 Mean 
 ALL                                  680                                696                                789                   722
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   802                                666                                848                   772
 02                                   833                                589                                875                   766
 03                                   875                                729                                974                   859
 04                                   864                                776                                989                   876
 05                                   926                                827                                931                   895

 06                                   936                                874                                983                   931
 07                                   947                                817                                869                   878
 08                                   839                                714                                875                   809
 09                                   886                                719                                870                   825
 10                                   880                                776                                865                   840

 11                                   838                                817                                885                   847
 12                                   843                                817                                911                   857
 13                                   870                                906                                735                   837
 14                                   854                                839                                771                   821
 15                                   886                                938                               1078                   967

 16                                   885                                859                                937                   894
 17                                   910                                879                                941                   910
 18                                   894                                873                                904                   890
 19                                   947                                858                               1014                   940
 20                                   988                                442                                624                   685

 21                                   869                                692                                879                   813
 22                                   775                                609                                936                   773
 23                                   874                                786                                926                   862
 24                                   879                                796                                843                   839
 25                                   952                                806                                567                   775

 26                                   681                                713                                827                   740
 27                                   843                                780                                739                   787
 28                                   895                                853                                609                   786
 29                                   692                                676                                499                   622
 30                                   707                                739                               1149                   865
 31                                   812                                765                                864                   814

 Mean 
 ALL                                  861                                772                                862                   831
 QUIET                                                                                                                               
 DIST.                                                                                                                               
 HELSINKI    1898     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                                   941                                895                                848                   895
 02                                   910                                853                                941                   901
 03                                   920                                806                                941                   889
 04                                   895                                832                                915                   881
 05                                   879                                905                                874                   886

 06                                   905                                869                                931                   902
 07                                   921                                827                                895                   881
 08                                   936                                890                                869                   898
 09                                   978                                879                                868                   908
 10                                   916                                843                                921                   893

 11                                   911                                843                                796                   850
 12                                  1108                                864                                942                   971
 13                                   968                                952                                942                   954
 14                                   916                                869                                963                   916
 15                                   989                                906                                932                   942

 16                                  1056                                926                                978                   987
 17                                   926                                739                                755                   807
 18                                   921                                682                                776                   793
 19                                   926                                864                               1129                   973
 20                                  1010                                963                                589                   854

 21                                   911                                552                                401                   621
 22                                   900                                344                                604                   616
 23                                   822                                776                                822                   807
 24                                   864                                854                                854                   857
 25                                   941                                863                                957                   920

 26                                   863                                774                                759                   799
 27                                   890                                832                                770                   831
 28                                   880                                895                                927                   901
 29                                   937                                901                                937                   925
 30                                   906                                927                                932                   922
                                                                                                                                     

 Mean 
 ALL                                  928                                831                                859                   873
 QUIET                                                                                                                               
 DIST.                                                                                                                               



 HELSINKI    1898     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                                   963                                952                                968                   961
 02                                   958                                947                                968                   958
 03                                   994                                869                               1004                   956
 04                                   927                                                                   932                   930
 05                                  1015                                953                                963                   977

 06                                   999                                957                               1030                   995
 07                                  1015                                963                                874                   951
 08                                   968                                937                                963                   956
 09                                   979                                927                                942                   949
 10                                   978                                905                                947                   943

 11                                   915                                868                                972                   918
 12                                   993                               1060                               1013                  1022
 13                                   993                               1014                               1092                  1033
 14                                   961                                722                               1143                   942
 15                                   916                                916                                656                   829

 16                                   998                                858                               1113                   990
 17                                   868                                748                                899                   838
 18                                   966                                899                                868                   911
 19                                   987                                873                                649                   836
 20                                   826                                899                                935                   887

 21                                   915                                967                                900                   927
 22                                   983                                879                                957                   940
 23                                   925                                982                                951                   953
 24                                   972                                681                                920                   858
 25                                  1004                                921                                848                   924

 26                                   978                                931                                952                   954
 27                                  1014                                941                                983                   979
 28                                  1045                                900                                894                   946
 29                                   998                                785                                848                   877
 30                                   931                                895                                895                   907
 31                                  1004                                952                                                      978

 Mean 
 ALL                                  967                                903                                936                   936
 QUIET                                                                                                                               
 DIST.                                                                                                                               
