Station: Royal Observatory, Hongkong.
Height above M.S.L. 109 ft.
1915.
Mouth of September.
Long. 7 36 41o 8 E.
Lat. 22° 18' 13.2" N.
( Zb 10 )
Barometer at M.S.L. and
Day.
reduced to gravity at
Air Temperature,
Tension of
latitude 45°.
Vapour.
Relative
Humidity.
Wind.
Direction and Force.
Amount of
Clond.
Rainfall.
Remarks.
1915.
7 B.
1 P.
9 P.
7 a.
I p.
9 p.
Max.
Min.
Daily
Daily Means. Means.
Daily
7 0.
1 p.
9 p.
Means.
Sept.
ins
10.
ins.
D
D
ip.
Dir. Vel. Dir. | Vel. Dir. |Vel. |(9-10).] points, m.p.h. paints. nu.pl. points.in.p.h.
ina.
1
29-735
29.738
29.727
81.8
87.6
83.8
89.6
R0.4
0.949
80
22
+ 19
10
2
.725
.719
.707
81.8
86.8
83.1
90.0
814
-973
81
30
8
24
29
.721
.728
81.9. .733
79.9
79.8
88.6
77-3
-958
89
19
3
9
-740
-746
-745
79.8
82.9
80.7
84.8
79.1
.853
80
14
2 I
8
-739
.727
.723
80.6
85.0
80.0
86.0
79.0
.815
76
10
10
.709
.686
.696
79.2
88.3
81.8
89.1
77.9
.836
74
10
28
ON OG Ovo m
6.2
0,040
4-5
8
6.8
0.865
7-5
3.9
3 3-5 0.005
.653
.635
.652
81.6
.637
.617
.620
78.7
86.7
87.4 80.9
88.3
78.7
.680
61
7
1
0.7
78.8
88.0
75-5
.576
5+
14
16 2
0.4
9
.668
677
.702
76.2
84-3
79.4
85.7
74-4
.720
O
70
I 2
10
II
0.5
10
.705
.701
.723
76.6
84.7
81.0
85.5
75.6
-759
72
2
8
19
9
19
4.2
Lunar halo, Dew, Slight fog. Slight fog, Lightning.
Dew, Slight fog, Thunderstormis. Slight fog, Lightning.
Lightning.
Slight fog, Haze.
Haze.
Huze.
Dew, Slight fog. Dew.
1
-733
728
.735
79.0
84.0
81.2
85.2
78.4
.703
13
8
19
1.0
12
.766
-757
.779
79.0
83.8
80.6
84.0
78.8
-733
69
20
6 23
5
2.5
13
.784
.812
.823
80.6
83.6
79.6
84.6
77.6
.813
77
7
7
11
5.2
0.025
14
.850
.846
.861 78.8
84.9
81.8
86.9
77.1
.825
76
IO 15
7
9
2.8
15
.885
.889
.906
80.8
83.8
81.8
85.9
79.8
6
16
-799
72
8
19
16
895
.912
.909
79.8
82-3
81.8
85.2
78.5
.832
77
14
17
.902
.922
.924
74.7
79.8
80.7
82.3
74.2
.875
87
18
.901
.903
.936
80.8
84.9
81.7
19
.877
.891
.887
81.8
85.2
20
.863
.847
.829
79.6
85.3
81.0 87.1
81-5 85.6
85.7
77.6
.917
84
79.8
.930
83
1 I
+m* a
19
8
3 10
19
8
to
19
8
15
DG OC 50 00 ON
4.6
IN
8.0
0.080
8
9.0
2.880
11
7-5
0.190
9
7
4.8
78.4
.888
8 T
9
913 2
3-+
21
.867
855 .856
79.0
86.8
81.8
88.2
78.0
.876
79
22
.845
.846
.898
82.7
82.9
78.8 86.7
77.0
.915
8+
23
.894
.888 .883
79.9
84.8
81,6 84.8
79.6
.895
83
aão
It 6
3.9
16
8
7
7.4
6 9
19
7.4
0.110
24
.861
.868
.866 80,8
85.8
80.6
86.7
79.5
.888
81
+ 10
13
3.1
25
.860
.861 .895
77.8
8z.8
78.8
85.3
76.2 .720
2
70
13 32 13
31
3
7.2
Lightning.
Slight fog, Lightning.
Thunderstorms, Lunar halo.
Lunar balo.
Rainbow.
Dew, Slight fog.
Lightning. Slight fog, Lunar corona.
1.065 Rainbow, Thunderstorms, Lonar
Lunar corona.
Dew, Lunar corona, Lunar halo.
Lunar halo, Lightning.
Unusual Visibility, Lunar corona.
[halo,
27
28
26 .885 .919
.911 .92+
.912
74-5
71.8
67.9
76.0
67.6
I
.569
]
13
32
12
2
8.8
0.180
Lightning.
.901
.936 69.5
78.1
74.8
80.2
68.0
.525
32 7
32
7.9
Lunar corona.
.911
.920
72.2
79.9
76.5
81.6
70.9
.590 65
13 10 10
5.8
Lunar corona,
30
29 .883 .863 .908
.908 .931
75.2
82.7
80.5
83.0
75.0
.695
2 69
.986
78.8
80.3
77-5
80.8
76,0
-775
+ 10 13 7 23 7
6.4
Lunar corona,
9.9
0.275
-
Means 29.811 29.811 29.822
78.8
83.6
80.0 83.4
1 ' 76.9 0.796 75
6.3 8.5 9.3 13.8 8.3
8.7
5.2
Sums. 5.715
In reducing the Barometer to gravity at latitude 45° a constant correction of −0·055 inch has been applied.
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