Station: Royal Observatory, Hongkong.
Height above M.S.L. 109 ft.
1918.
Month of May.
Long. 7 36 41′′8 E.
Lat. 22° 18' 13-2" N.
Barometer at M.8.L. and
Day.
reduced to gravity at
latitude 45o.
Air Temperature.
Tension
of Vapour.
Relative
Humidity.
Wind.
Direction and Force.
Amount of
Cloud.
1918.
7.
I p.
9 p.
7 ".
9 11.
Max.
Min.
Daily
Daily Means. Menus.
Daily
7 H.
I p.
9 p. Means.
Rainfall.
Remarks.
in.
May
جما
+
A
ה
Dir. Vel. Dir. Vel. Dir. Vel. (0-10.) "points.fai.p.b. ¡points.p.h. pointa, mp b.
โทร.
t
29.901
29.912
29.871
73.2
78.3
74.3
80.7
71.1
0.760
87
9
2
9
9 10
10
8.4
Lunar Corona.
2
.878
.868
.850
75.0 75.8
73-5
76.7
73-4
-778
8
50
17 9
21
8 16 10.0
0,010
3
.845
.838
.817
74.9
77.6
74.9
78.6
73-4
.796
91
10
13
8
17
7
6
9.9
+
Solar bulo.
,813
.884
.899
74-7
73.2
72.4
77.2
71.7
.779
93
20
13
9.8
0.595
.912
.945
.970
72,0
70.8
66.6
72.5
66.3
.630
I
3+
7
35
8.5
0.035
Slight fog, Thunderstorms, Dow.
.921
.909
.898
68.7
71.2
69-4
72,0
67.2
623
86
28 7
7 23
16
9.4
0.050
.871
.843 .804
70.5
73.0
72.3
73.3
70,0
.707
91
19
17
19 10.0
0.075
-758
-733
713
70.4
70.2
69.0
71.8
68.4
.693
94
24
N
27
8 z6 10.0
1.610
9
-735
785
.840
68.7
75+
71.3
77.8
68.3
.542
69
I
11
IO
.877 .883
.868
69.3
75-7
69.4
26.9
67.6
-428 56
.893
.888
.8+3
71.2
75-7
71.6
-8.4
68.2
.643
82
NO N
17
10
17
12
.886
.853 .836
70.6
80.5
73.5
82.9
68.7
704 79
13
.8go
.915
+941
74.8
77.0
73.6
79.3
72.0
.707
82
8
2
14
.940
.925
.938
71-5
73.6
72.0
74.2
70.1
.634
81
23 26
24
£5
.928
.901
.875
69.9
71.5
71.6
72.3
69.7
711
94
8
25
7
20
ONGC 06 00 00
NO NO 1-30
6
8.6
2.6
4.0
1.9
Thunderstorms.
Solar halo, Unusual Visibility. Solar balo, Consnal Visibility.
Dew.
Dew.
19 6.7
8
32
10.0
0.025
8 17 10.0
0.035
16
,820
-745
73-4
79.1
78.4
83.0
71.7
.823
R
91
15
I 2
15
9.5
0.080
17
715
-753
78.6
77.1
77.0
80.1
76.2
.869
90
18
21
21
2
10.0
0.540
Lightning.
Gnusual Visibility, Lightning, Thunder.
18
782
87
.826
78.3 82.9
78.4
84.4
76.8
.874 87 21
10
20
9.2
0.020
Lunar halo.
19
.82
.834
.662
8.5
83.7
77.4
84.8
76.4
.847
$5 17
8
18
7
9.1
I
Dew.
20
881
.901
.885
74.
76.4
75-3
78.4
73-4
.759
85
14
8
12
7
9.0
0.010
21
.840
.831
.820
79.6 75-9
81.6
73-3
.760 83
9
7
18
9
6.8
21
.789
.793
.765
78.7
82.4
79.8
85.1
75.6
.846
10
16
19
4
7.5
Lunar Corona.
Dew, Lunar Coroun.
Lunar Corona, Dew.
23
.779
746
-749
79.9
85.2
76.0
85.8
75.3
.869
83
19
15
24
.744
709
.682
79.0
83.9
80.9
86.3
76.1
.866
82
21
25
.662
.629
.651
80.4
82.4
77-8
83.5
75.2
.849
84
18
18
5 +400
20
21
8.0
0.235
Lunar Corona.
20 11
14
8.8
0.190
Lunar Corona,
20
29
9.5
0.280
Lunar Corona, Lightning.
zó
.673
.675
.686
77.2
82.5
79.7
84.5
76.5
.866
85
1
18
7 20
9
9.0
0.180
Lightning.
27
.676
.636
.642
81.4
83.1
81.4
85.0
80,1
.918
84
15 19 25 19
9.7
Solar ha'o, Lunar Corona, Lightning.
28
.669 .647
.678
81.6
85.8
76.6
86.3
76.3
.863
81
21 10
23
9.0
0.040
29
.686
.69%
-717
77-4
81.1
77.8
83.8
74.8
.869
89
8
8
12
7 12
2
9.6
2.620
30
731
1716
.728
814
84.8
82.3
86.7
80.9 .921
8z
17
■ 1 19
15 17
12
9.9
0.025
Solar halo,
31
748
731
769
82.0
82.0 84.3
86.9
80.6
.924
83
19
9 19
20
10
8.9
A
Lightning.
Sum.
Mens 29.809 29.804 29.804
75.2
78.5
75.2
80.3
73.1
0.770
84 115 12.7 13.0 16.8 to.5 10.6
8.5
6.655
( Zb 5 )
315