Day.
Station: Royal Observatory, Hongkong.
Height above M.S.L. 109 ft.
Barometer at M.S.L. and
reduced to gravity at
latitude 45o.
Air Temperature.
1919.
Month of April.
Tension of
Vapour.
Relative
Humidity.
Wind.
Direction aud Force.
Amount of
Cloud.
阱。
Long. 7 36 418 E.
Lat. 22° 18' 13.2′′ N.
Rainfall.
Remarks.
+
1919.
7.
I p.
9 p.
7 a.
I p.
9 p.
Мал.
Min.
Daily Daily Means. Means,
7 a,
i p.
9. p.
Daily Means.
Apr.
Inu.
ins.
in.
%
O
ត
2
30.015 обо 29.996 .958
30.013
30.037
37.2
59.7
58.8 60.9
56.8
.040
.046
61.8
65.8 65.6 66.7
60.8
0.438 .510
89
29.977
29-973
63.8
66.5
65.6
66.8
63.7
.584 95
-994
30.026
64.4
63.2
63.6
65.4 63.2
-536
90
30.056
30.045
.059
62.9 71.4
66.9
72.6
61.3
-429
.063
.059
.036
65.0
71.8
67-5 72.4
63.7
.391
.000
29.977
29.932
66.7
73.8
68.9
74.1
66.3
77
29.932
.910
.881'
68.8
78.1
71.2
79.8
68.4 .683
83
9
.861
.854
.808
69.8
76.1
72.5
78.6
63.8
,682
85
10
.820
.822
.834
72.0 78.4
74-7
81.7
70.8
.745 86
II
.841
.878
.862
67.7 66.6
67.5
73.6
66.+
.648
93
12
.808
.760
-755
66.9
70.9
70.6 77.2
66.7
.676
92
13
.759
-747
.746
71.6
75.5
78.7
79.9
71.0
.78:
14
.769
-777
.791
71.5
82.8
79.3
83.2 70.8
.795
15
.810
.840
.846 73.8 74-3
74.2
79.0
69.0
.772
90
16
.886
.874
.845
67.0
17
.860
.857
.848
70.3
67.6 68,8 72.5
69.1
66.8
.663
96
74.0
69.5
.738 97
18
.841 .845
835
68.6. 71.4 69.7
72.7
68.z
.698 94
19
.868
.89z
.917
70,0
80.0
74.7
81.9
69.6
-777
20
.930
.956
.916
77.1 76.8 73-2
82.6
73.1
.811
go
21
.891
.862
.824
78.1 81.7 78.8
82.4
76.0
.822
82
22
-793
+792
.847 78.9
83.6
73.4
85.1
71.3
.803
8:
23
.930
-954
.978
71.0
70.7
69.6
*1.9
69.2
.616
24
.978 .960
-933
69.1
74.6
714
74.6
68.8
.642
25
.911 .898
.872 71.1
74-4
73.1
82.6
70,6
.750
26
.890
.867
27
.850 ..837
.808 77.8
.850 72.6 84.3
76.8
84.6
72.1
.770
00 Q20
85
92
82
83.1
79.4
85.2
75-7
.854
84
28
.793 .798 .784
79.4 83.0
79.6
83.6
78.3
.848
81
29
-799
.808
.809
79.6
83.7
80.2
85.8
79-5
.866 81 16
30
.829 .851
.819
80.5
83.5
80.1
85.9
78.6
.855
So
ANO 00 00 AM 10 10 00 00 00 00 F: 100 00
20
1
I
26
8 z6 8 19 7
7 19 17
+
28 32 8
7 9 7 19
8 21
9 19 18
inx gang 10 1000 12000
10 21.
Dir. Vel. Dir. Vel. Dir. Vely points/m.p.h. puinis,jm.p.lu pointa | m.p.k.
6 8 6 13 31 17 8 zó
32 4
6
12
9 19 9
10 15 9 18 7
·(0-10.)|
2 10.0
Ins.
0.270
8 16 9.7
0.020
2 10.0
0.160
10
8
10.0
0.3 0.2
0.185
Haze.
-
3.0
5
3.6
Unusual visibility. Slight fog.
Haze, Unusual visibility.
Haze, Dew.
25
I 1
5.6
8.5
Lunar corona, Slight fog.
24
8 30 10.0
1.245
7 13 9-5
1.040
Thunder.
17 15 9.7
Lightning.
18 19 9.8
0,040
2
9 17 9-9
1.295
Thunderstorms.
Thunderstorms,
2j
20 8
9.9
0.025
7 10.0
**
Fog.
14 10
23
16 8 17 14 17
9 28 9.5
14 8.7
I I
கன் ன்
0.045
Fog, Lightning.
13 7.8 0,010
8.4
0.030
12 19 19
2
6
9.6
0.040
8 12 7 27
19 9.0
Solar halo, Dew.
Lightning.
Lunar corona, Lightning.
19 8 20
9 20
9.9
404
8
19 9 15
II
8.6
7
J0 19 6
4.9
I 16
15
16
18
- ND 00
7 16 13
6.5
Slight fog, Unusual visibility, Solar halo.
·
8 17
17 8 16
II
8.z
0.025
16
LA
5
7.0
+
Sum,
Menus. 29.892
29.891 29.884 70.5
74.9
72.2
77.1
69.z
0.692
85
|10.1 |11.9 |1.1.3 14.7 |10.4 |11.2
7.9
4-430
936
1:20
( Zb 4 )
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