Station: Royal Observatory, Hongkong.
Height above M.S.L. 109 ft.
Barometer at M.S.L. and
Day.
reduced to gravity at
latitude 45°.
Air Temperature.
1917.
Month of April.
Tension of
Vapour.
Relative
Humidity.
Wind.
Direction and Force.
Amount of
Cloud.
席。
Long. 7 36 41 8 E.
Lat. 22° 18' 13.2" N,
Rainfall.
Remarks.
1917.
7 1.
гр.
9 p.
7 n.
9 P
Max.
Min.
Daily Daily Means. Meaus.
Daily
7 4.
I p.
9 p. Means.
Apr.
loc
lus.
in.
%
Dir. Vul. Dir. Vel. Dir. |Vel. [points in.p.h [poluism.p.lipuints/m.p.li.
|(0-10),|
ins.
D
I
30.085
30.038
30.059 64.0
67.8
65.7
69.0
62.4
0.378
60
27
2
.043
29.986
29.981
3
29.975
.928
.968 64.6
65.5 70.5
66.7
74-3
64.6
8 I I
.519
75
74.6
68.6
75.0
63.9
26
-521 75
12
25
-937
.934 |
.934
66.6
72.4
67.6
73-5
64.2
-573
84
.948
-914
.897
67.4
73.6
69.0 i
74.5
66.4
.596
82
IO
I
10
,887
.870
.857 67.8
76.1
70.6
78.0
66.2
.634
82
I
24
.855
.863
.878
68.4
77.6
71.0
79.3 67.6
.675
85
25
.883
.876
.868
64.5
68.6
67.1
70.5
64.4
-496
77
33
9
.846 .828
.820
66.3
69.6
68.5
71.2
65.6
631
92
9 16
10
.859 7823
-794
69.2
71.8
72.6
77.8
68.6
729
92
9 14
JI
.711
.685
.662
76.3 77-7
77.0 79.6
74.1
-790
86
15
∞ a in a $150 at
8 26 9 I I 6.8
9
12
23 II
7.1
6
I
5.7
9
7
9 13
7.8
4.
1.5
3.2
Haze. Huze.
Slight fog.
Slight fog.
6.7
Slight fog, Haze.
7 28
21
9.9
0.405
Haze, Thunderstorms.
18 8 17
9.7
0.015
Iz 9
9.3
Slight fog, Thunderstorms. Slight fog.
19 17 19
10
9.9
12
.611
.642
.665
75.1
74.6
69.4
77.6
68.9
-756
94
I 2
23 12
8 21
13
763
.774
.805
70.4
73-7
70.6
76.8
69.1
672 88
7 14
14
.842
.824
.836
68.6
68.8
67.2
70.3
66.8
.630 91
13 7
18
8 12
9 12
+799 .787
.786
67.5
67.6
67.6
69.7
66.5
.641 94
10.0
9.2
10.0
10.0
2.630
Thunderstorms.
0.105
Slight fog, Thunderstorms.
0.130
0.270
Slight fog.
16
.803
,814
.816
66.6
70.7
69-7
72.2
65.6
.587
83
:
10
16 9.8
Ilaze, Lightning.
17
-774 .784
.788
67.7
67.3
67.9 70.5
66.6
.613
89
24
8 18
8 18
10.0 0.140
Lightning.
18
.784
.810
.835
67.2
68.3
69.1 71.4
66.6
.653 93
17
8
16
8 15
9-7
0.085
Lightning.
19
.801
.821
.801
68.6
70.8
69.7
72.8
68.1
.687 94
8
IO [[
8 12 9.2
0.115
Thunderstorms.
20
.793
.776
.800
70.0
70.6
70.6
74.0
69.1
.712
94
9
8
9 19
9 14
9-3
0.240
Thunderstorms,
21
.806
.815
.815
68.6
68.6
68.5
71.1
67.4
.661
94 7
27 7
7 28
10.0
0.260
Thunderstorms.
22
-793
.749
.688
66.9
71.6
72.6 76.6
66.9
.708 95
26
8
26
10
23
.700
.709
.725
77.6 79-5
77.5
80.6
74.1
.845 90 18 10 21 15 14 5
9.7 9.9
0.040
Slight fog.
24
.782
.839
.859
74.5
69.3
66.6
75.2
66.2
.673
92
8 13
25 .891
.888
.885
64.9
66.6 64.7 67.3
64.5
.542
87
7 30
26
.865
.827
.817
63.2
68.8
67.6
70.0
64.1
.608
770
34
32
92
7
24
8
18
27
.817
.830
.851
68.6
73.8
72.6
77-4
68.0
00 -
773
37
10.0
Thick fog.
31
10.0
A
.729 92
28
.856
.844
.910
72.2
72.5 67.0
75-5
63.8
.606 82
7
33
6 13
19 9.5 9.4 9.9
0.005
Thunderstorms.
0.015
Slight fog, Lightning, Thunder.
0.275
29
.905
.915
.891
65.8
64.9 63.6
66.6
62.5
.492
82
6 14 32
પ
9
5
12
30
.924
.910
-933
60.8
62.6
61.8
66.5
59.4
-414
74
32
32
7
Meals 29.845
29.837 29.841 68.z
71.0
69.0
73-5
66.4
0,626
86
8.9 13.3 9.0 15.9
8.8 12.5
8.7
10.0 0.215
Slight fog, Lightning, Thunder.
7.2 0.285 Haze.
440
Sums. 5.230
In reducing the barometer rendings to gravity at latitude 46°, a constant correction of −0·055 inch has been applied.
( Zb 4 )
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