Royal Observatory, Hongkong
Height above M.S.L. 109 ft.
Barometer at M.S.L. and reduced to gravity at latitude +5°.
Air Temperature.
1918.
Month of September.
Tension of Vapour.
Relative Humidity.
Wind.
Direction and Force.
Amount of Cloud.
Longitude: 7° 36' 41.8" E.
Latitude: 22° 18' 13.2" N.
Rainfall, Remarks.
---
Day 1
Barometer: 29.695, 29.734, 29.752
Temperature: 8.8, 81.7, 82.8, 76.7
Vapour Tension: 0.873
Humidity: 36%
Wind: 6, * 25 9 27 9.7
Rainfall: 0.520 in.
Remarks: —
Day 2
Barometer: 0.779, 0.803
Temperature: 78.9, 79.3, 82.3, 76.0
Vapour Tension: 0.860
Humidity: 9, 21
Wind: [8, 9, 21, 8.5
Rainfall: 1.370 in.
Remarks: Rainbow, Thunderstorms.
Day 3
Barometer: 1.761, 0.768, 0.749
Temperature: 79.4, 83.9, 79.0, 84.0, 78.3
Vapour Tension: 0.832
Humidity: 22, 12
Wind: +.7, 0.035
Vapour Tension (additional): 0.726, 0.722, 0.703
Temperature (additional): 79.2, 85.6, 79.4, 85.8, 78.1
Humidity: 82.4?
Wind: 10 10, 77, 1.7
Barometer (additional): 0.701, 0.683, 0.681
Temperature: 87.2, 81.7, 87.8, 76.4
Vapour Tension: 0.861
Humidity: 79, 24, 9
Rainfall: 0.5 in.
Remarks: Fluze, Dew.
Day 4
Vapour Tension: 0.709, 0.696
Temperature: 79.0, 88.0, 81.3, 88.7, 78.7
Vapour Tension: 0.873
Humidity: 77, 25, 10
Wind: N, 2, 0.4
Vapour Tension: 0.719, 0.717, 0.697
Temperature: 79.1, 87.3, 82.4, 88.7
Vapour Tension: 0.866
Humidity: 77, 24, 25
Rainfall: 1.2 in.
Barometer: 1.704?
Vapour Tension: 0.686, 0.702
Temperature: 80.8, 81.1, 80.0, 86.4, 79.0
Vapour Tension: 0.956
Humidity: 88, 7, 2
Rainfall: 74? 0.180 in.
Wind: 9
Vapour Tension: 0.702, 0.708, 0.722
Temperature: 80.3, 82.1, 81.6, 86.5, 79.4
Vapour Tension: 0.959
Humidity: 88, 29, 2
Rainfall: 5.6 in.? 0.345 in.
Wind: 10
Vapour Tension: 0.727, 0.704, 0.730
Temperature: 79.4, 83.9, 80.0, 85.6, 78.1
Vapour Tension: 0.926
Humidity: 87
Wind: ƠN N, 9, 14, 6.7
Rainfall: 0.020 in.
Remarks: [ ]
Vapour Tension: 0.730, 0.710, 0.754
Temperature: 79.7, 88.5, 81.6, 89.8, 78.1
Vapour Tension: 0.776
Humidity: 67, 18, 2, 2, 1 1
Rainfall: 1.5 in.
Remarks: Solar halo, Dew, Lightning. Thunderstorms, Dew, Thunderstorms. Solar halo, Fog, Thunderstorms, Unusual visibility, Thunderstorms.
Day 12
Vapour Tension: 0.760, 0.780, 0.825
Temperature: 80.7, 80.5, 88.7, 79.3
Vapour Tension: 0.750
Humidity: 66, 2, 14, 1 2, 8, 32
Rainfall: +4.2 in.?
Remarks: —
Day 13
Vapour Tension: 0.831, 0.824, 0.844
Temperature: 80.1, 87.1, 79.8, 88.6, 77.9
Vapour Tension: 0.742
Humidity: 67, 2, +15
Wind: 5 14, 2.7
Remarks: —
Day 14
Vapour Tension: 0.855, 0.837, 0.859
Temperature: 78.1, 83.9, 80.2, 86.3, 76.8
Vapour Tension: 0.832
Humidity: 10, 10 12, +4.2
Remarks: —
Day 15
Vapour Tension: 0.839, 0.827, 0.839
Temperature: 79.3, 82.7, 80.7, 85.6, 79.2
Vapour Tension: 0.777
Humidity: 72, 12, 7, 9, 20 10 22, +3
Remarks: —
Day 16
Vapour Tension: 0.782, 0.781, 0.783
Temperature: 79.4, 77.1, 78.6, 81.8, 75.6
Vapour Tension: 0.834
Humidity: 11, +10, 13 12, 2, 8.2
Rainfall: 1.365 in.
Remarks: —
Day 17
Vapour Tension: 0.774, 0.768
Temperature: 81.2, 79.1, 85.7, 76.2
Vapour Tension: 0.867
Humidity: 87, 16 6, 9.0
Rainfall: 0.675 in.
Remarks: —
Day 18
Vapour Tension: 0.755, 0.814
Temperature: 78.6, 78.7, 84.0, 77.7
Vapour Tension: 0.896
Humidity: 68, 27
Remarks: —
Day 19
Vapour Tension: 0.810, 0.846
Temperature: 77.3, 78.0, 75.6, 78.8, 75.3
Vapour Tension: 0.859
Humidity: 10, 93
Remarks: —
Day 20
Vapour Tension: 0.801, 0.798, 0.780
Temperature: 75.2, 75.3, 75.3, 77.3, 74.8
Vapour Tension: 0.827
Humidity: 93, 7
Remarks: —
Day 21
Vapour Tension: 0.766, 0.784, 0.797
Temperature: 74.2, 75.2, 76.2, 76.8, 73.5
Vapour Tension: 0.796
Humidity: 92, 24, 22
Remarks: —
Day 22
Vapour Tension: 0.812, 0.821, 0.830
Temperature: 74.0, 75.6, 78.2, 78.8, 73.4
Vapour Tension: 0.762
Humidity: 84, 6, 20
Remarks: —
Day 23
Vapour Tension: 0.822, 0.837, 0.869
Temperature: 76.3, 78.7, 77.6, 79.9, 76.3
Vapour Tension: 0.732
Humidity: 73, 6, 17, 15
Remarks: —
Day 24
Vapour Tension: 0.954, 0.935, 0.967
Temperature: 76.3, 79.3, 77.9, 80.1, 73.9
Vapour Tension: 0.720
Humidity: 75, 26
Remarks: —
Day 25
Vapour Tension: 0.930, 0.944, 0.966
Temperature: 76.7, 79.8, 77.8, 80.4, 74.6
Vapour Tension: 0.767
Humidity: 81, 7, 27
Remarks: —
Day 26
Vapour Tension: 0.925, 0.916, 0.932
Temperature: 77.3, 80.2, 77.2, 81.4, 74.2
Vapour Tension: 0.819
Humidity: 86, 7, 17
Remarks: —
Day 27
Vapour Tension: 0.910, 0.878, 0.810
Temperature: 76.4, 78.8, 77.6, 80.7, 76.0
Vapour Tension: 0.873
Humidity: 91, 9, 10
Wind: 70 00 00 00 0?
Rainfall: 3? 17, 9.3, 0.035 in.
Remarks: Lunar halo, Thunderstorms.
Day 28
Remarks: Thunderstorms, Lunar halo, Unusual visibility, Thunderstorms, Lunar corona.
Rainfall: 9.9, 2.790 in.?
Wind: 9, N, 21, 7, 19, 10.0, 3.860
Humidity: 16 6, 27, 10.0, 5.335
Wind: NIN, 26 8, 27, 10.0, 1.675
Remarks: Lunar corona.
Day 29
Vapour Tension: 0.840, 0.788, 0.815
Temperature: 76.3, 82.2, 78.2, 82.9, 73.1
Vapour Tension: 0.855
Humidity: 87, 6, 30
Remarks: —
Day 30
Vapour Tension: 0.840, 0.833, 0.895
Temperature: 72.5, 78.9, 76.0, 80.3, 72.4
Vapour Tension: 0.557
Humidity: 62, 32, 5
Wind: —
Rainfall: 5, 9, 7.5, 0.125 in.
Remarks: Unusual visibility, Dew.
Additional: 7, 7.6, 0.015 in.
Remarks: Solar halo, Lightning, Thunder.
Lightning.
---
| Parameter | Mean / Total |
|---|---|
| Barometer (7am) | 29.794 |
| Barometer (9am) | 29.792 |
| Barometer (1pm) | 29.809 |
| Temperature Mean | 77.8 °F |
| Temperature Max Mean | 81.8 °F |
| Temperature Min Mean | 78.9 °F |
| Temperature Absolute Max | 83.5 °F |
| Temperature Absolute Min | 76.5 °F |
| Vapour Tension Mean | 0.819 in. |
| Relative Humidity Mean | 81% |
| Wind Velocity Mean | 7.8 mph |
| Cloud Amount Mean | 9.8, 9.3, 14.2, 9.1, 10.0 (0–10 scale) |
| Rainfall Total | 18.450 in. |
---
File Reference: Zb9
Page: 319
Day.
Station: Royal Observatory, Hongkong.
Height above M.S.L. 109 ft.
Barometer at M.S.L. and
reduced to gravity at
latitude +5°.
Air Temperature.
1918.
Month of September.
Tension of Vapour.
Relative
Humidity.
Wind.
Direction and Force.
Amount of
Cloud.
1918.
74.
p.
9 P.
7.
1 p.
9.
Max.
Мін.
Daily
Daily Means. Moana.
Duily
7.
p.
9 P.
Meuns.
Long. 7 36 418 E.
Lat. 22° 18' 13-2" N.
Rainfall,
Remarks.
In.
Sept.
I
Inu.
A
ᄆ
A
Dir. Vel. Dir. Vel.| Dir.| Vel. (0-10.)|
|points.jur.p.l. points.us.p.h. joints. m.p by
Ins.
29.695
29.73+
29-752
8.8
81.7
8z.8
76.7
0.873
36
6
*
25 9 27 9.7
0.520
2
TER
-779
.803
78.9
79-3
82.3
76.0
.860
9
21
[8
9
21
8.5
1.370
Rainbow, Thunderstorms.
3
1761
-768
.749
79.4
83.9
79.
84.0
78.3
.832
22
12
+.7
0.035
.726
.722
.703
79-2
85.6
79.4
85.8
78.1
824
10 10
77
1.7
701
.683
.681
87.2
81.7
87.8
76.4
.861
79
24
9
0.5
Fluze, Dew.
.709
.696
דול.
79.
88.
81.3
88.7
78.7
.873
77
25
10
N
2
0.4
.719
-717
.697
79.1
87-3
82.4
88.7
.866
77
24
25
1.2
1704
.686
.702
80,8
81-1
80.0
86.+
79.0
-956
88
7
2
74
0.180
9
.702
.708
.722
80.3
82.1
81.6
86.5
79.4
-959
88
29
2
5.6
0.345
10
.727
.704
730
79-4
83.9
$0.0
85.6
78.1
.926
87
ƠN N
9
14
6.7
0.020
[ ]
.730
.710
.754
79.7
88.5
81.6
89,8
78.1
776
67
18
2
2
1 1
1.5
Solar lalo, Dew, Lightning. Thunderstorms,
Dew, Thunderstorms.
Solur halo, Fog, Thunderstorins,
Unusual visibility, Thunderstorms.
12
.760
.780
.825
80.7
$';
80.5
88.7
79.3
-750
66
2
14
1 2
8
32
+
4.2
13
.831
,824
.844
80.1
87.1
79.8
88.6
77.9
.742
67
2
+
15
เค
5 14
2.7
14
.855
.837
.859
78.1
83.9
Ro.z
86.3
76.8
.832
10
10 12
+
4.2
15
.839
.Rz7
.839
79-3
82.7
80.7
85,6
79.2
.777
72
12
7
9
20 10 22
+3
16
.782
781
783
79-4
77.1
78.6
81.8
75.6
.834
11
+
10
13 12
2
8.2
1.365
17
-774
76.8
81.2
79.1
85.7
76.2
.867
87
16 6
9.0
0.675
18
-755
.814
78.6
78.7
84.0
77.7
.896 68
]
27
19
.810
.846
77-3
78.
75.6
78.8
75-3
.859
10
93
20
.801
.798
.780
75.2
75-3
75.3
77.3
74.8
.827
93
7
ZI
.766
.784
-797
74.2
75.2
76.2
76.8
73-5
796
92
24
22
.812
821
.8.30
74.0
75.6
78.2
78.8
73.+
.762
84
6
20
23
822
.837
.869
76.3
78.7
77.6
79.9
76.3
-732
20
77
24
.882
.910
.942
75-7
78.3
77.4
79.7
73.5
.69z
73
6
17
15
.954
935
.967
76.3
79.3
77-9
80.1
73-9
.720
75
26
.930
944
+966
76.7
79.8
77.8
80.4
74.6
.767
81
7
27
.925
.916
.932
77.3
80.2
77.2
81.4
74.2
.819
86
7
17
zB
.910
.878
.Rijo
"6.4
78.8
77.6
Ro.7
76.0
.873
91
9
10
70 00 00 00 0
3
17
9.3
0.035
Lauar halo, Thunderstorıns.
Thunderstoring, Lunar halo, Cunsnal visibility Thunderstorms, Lunar corona.
9.9
2.790
9
N
21
7
19
10.0
3.860
16 6
27
10.0
5-335
NIN
26 8
27
10.0
1.675
25
४ 18
8.5
Lunar corona.
22
15
6.0
25
8 22
NN
7.5
Lunar corous,
21 8.1
0.025
18
9.0
0.080
Rainbow.
29
.840
-788
.815
76.3
82.2
78.2
82.9
73.1
.855
87
6
30
.840 .833
.895
72.5
78.9
76.0
80.3
72.4
-557
62
32
5
-
5
9
7.5
0.125
Cunsual visibility,
Dew.
7
7.6
0.015
Solar balo, Lightning, Thunder,
:
9.5
Lightning,
Sum.
Monus | 19-794
29.792
29.809❘ 77.8
$1.8
78.9
83.5
76.5
0.819
81
7.8
9.8 9.3 14.2 9.1|10.0
6.4
18.450
( Zb 9 )
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