MEAN BAROMETRIC PRESSURE IN HONGKONG, (1861-1885 INCLUSIVE).
THE HONGKONG GOVERNMENT GAZETTE, 24TH APRIL, 1886.
329
YEAR.
January.
February.
March.
April.
May.
June.
July.
August. September. October. November. December.
Means.
1861,
30.104
30.160
30.094
29.983
29.886
29.844
29.814
29.755
29.806
29.991
30.103
30.156
29.975
1862,
30.234
30.243
30.159
.983
.906
.796
.739
.759
.901
30.031
30.102
.189
30.003
1863,
30.263
30.163
30.111
.991
.870
.775
..738
.694
,870
30.049
30.187
.205
29.993
1864,
29.956
29.966
29.984
.754
.720
.576
.608
.604
.734
29.932
30.049
.102
.832
1865,
30.120
29.952
29.992
.864
.785
.655
.659
.620
.590
.814
29.939
.00%
.833
1866,
30.046
29.943
29.865
.831
.686
.588
.662
.646
.611
.847
30.011
.095
.820
1867,
30.081
30.001
29.889
.802
.613
.620
.612
.632
.617
.930
.161
.158
.843
1868,
.105
.067
30.00%
.930
.894
.650
.744
.686
.813
.957
.050
.126
.919
1869,
.157
.095
29.923
.919
.813
.707
1725
.738
.807
.891
.104
.075
.913
1870,
.096
.079
29.945
.871
.768
.791
.668
.689
.748
.909
.036
.048
.887
1871,
.063
.044
30.038
.897
.816
.709
.732
..691
.764
.864
.059
.181
.905
1872,
.133
.136
29.991
.919
.823
.762
.729
.698
.839
29.940
.078
.060
.926
1873,
.127
.142
30.093
29.938
.820
.737
.719
.803
.739
30.006
.154
.161
.953
1874,
.214
.134
30.059
30.024
.804
.824
.744
.781
..855
30.012
.187
.152
.983
1875,
.180
.139
30.042
29.904
.850
.755
.669
.681
.788
29.889
.051
.134
.923
1876,
.138
.046
29.975
29.864
.875
.826
.739
.752
29.878
30.051
.088
.177
.951
1877,
.257
.202
30.137
30.034
.866
.825
..758
.762
30.007
.127
.184
.175
1878,
.300
.278
.237
.094
.938
.853
.910
.927
29.872
.027
.147
.193
30.028
.065
1879,
.248
.188
.152
.053
.930
.894
.841
.884
.882
.095
.108
.201
.040
1880,
.261
.179
.202
.102
.960
.853
.797
.808
.927
.053
.259
.317
.060
1881,
.306
.202
.260
30.040
.992
.896
.808
.800
.928
30.017
.130
.223
.050
1882,
.267
.243
.202
29.985
.850
.773
.715
.713
.852
29.972
.119
.164
29.988
1883,
.187
.157
.054
.944
.859
.799
.745
.792
.935
30.112
.091
.228
.992
1884,
.211
.181
.027
.985
.866
.775
.694
.738
.798
.034
.113
.238
.972
1885,
.223
.153
.107
.954
.877
.784
.736
.727
.864
.023
.175
.154
.981
Mean,..
30.171
30.124
30.062
29.947
29.848
29.763
29.732
29.735
29.817
29.983
30.107
30.157
29.953