Day.
Station Royal Observatory, Hongkong,
Height above M.S.L. 109 ft.
Burometer at M.S.L. and
reduced to gravity at
latitude 45°.
Air Temperature.
1917.
Month of July.
Tension of
Vapour.
Relative
Humidity.
Wind. Direction aud Force.
Amonut of
Clond.
Long, 7 36 418 E.
Lat. 22° 18' 13′2′′ N.
Rainfall.
Remarks.
( Zb 7 )
1917.
7th.
I p.
9 p.
7 51.
I p.
9 p.
Max.
Min.
Daily Daily Means. Means.
Daily
7 8.
I p.
9 P.
Means.
July.
im.
ina. 29.790
Ins.
Ing.
21
。
+
29.802
29.797
79.7
8++
81.8
86,6
78.0
0:885
81
9
Dir. Vel. Dir. Vel. Dir. Vel. |pulata, 01.p.ħ. |points. m.p.k. Įpofats in puh.
17 8 18
(0-10.)
ine.
6.9
2
.798
781
+745
82.0
86.6
82.0
88.0
80.6
.892
>8
25
21 9 18
3.9
0.003
3
.750 .726
697
82.0
87.6
81.9 88.4
80.5
.854
74
21
20 Ic
19
3.2
Unusual visibility.
.679
.650
611
81.6
87.6
81.6
88.4
80.5
.836
73
22
20 16 19
4.0
.617
-579
541 80.4
85.3
81.0
87.5
80.0
.849
75
22
21 8
I2 17
3 4-4
Solar halo.
-553
-564
-553
80.9
86.5
81.1
86.8
80.z
.885
79
24
7
22
16 2
9.0
...
Solar halo.
.592
.592
.603 81.1
38.5
81.6
89.9
80.1
.921
81
25
4
25
7 16 2
7.4
***
Solur halo, Lightning.
.635
.637
.655
80.7
85.6
81.1
88.3
79.2
.933
84
14
10 6
7.5
A
Haze, Solar halo, Lightning.
9
.650 .645
.64+
80.0
85.2
80.8
$6.2
79.2
-936
86
10 19
7.2
0.005
Slight fog, Dew, Solar Bulo, Lonar halo, Lightning.
10
.643
.623
.652
78.3
84.6 80.9
87.8
77.6
28
.907
84
.675
.65+ .68+
80.0
88.5
81.3
88.8
78.3
·93+
85
2
7
10 m
6 8
5
6.5
0.895
Slight fog, Solar halo, Lightning.
12
.675
.639
.625
Ko.3
87.5
82.7
88.1
79.1
.934
82
9
4
.549
-475
.491
83.1
89.0
76.4 90.8
76.2
-953
81
25
7
14
.429
-408
.462
81.0
86.6
82.2
88.0
75-5
.911
83
25
8
20
15
.497
-577
.611
80.7
76.3
77.6
80.9
73.8
.855
90
20
18
20
21
16
.625
.683
-735
77-7
76.8
78.1
81.0
75.1
.871
91
7
6
21
8
17
.703
-734
747
80.5
83.9
80.5
84.2
76.2
.905 86
10 17
9
22 10
18 I .694
.688
.680
79.0
85.1
80.2
86.1
78.3
.833
-8
& 13 9
19 .619
.600
.612
80.0
84.7
80.4
85.9
78.4
.805
74
5
17
20
585
-573
.563
80.1
87.6
82.0
88.5
78.9
.842 74
25
21
.538
.502
-535
81.3
87.8
81.9
90.2
80.1
.895
23
22
.595
.600
.667
82.0
86.2
82.6
87.2
81.9
-951
83
20
18
23
,700
714
.709
79.8
80.7
79.7
82.7
76.8
-923
89
30
24
.687 .663
.630 74-3
80.3
78.8
80.8
73-7
.877
91
30
25
+592
.608
.615
76.9
76.8
78.8 80.1
74-9
.863
10 91
2NW ON as
15
O o ag
3 10 3
5-5
Slight fog, Solar halo.
Enlag.
4.6
Slight fog, Dew, Lunar halo, Unusual vidbility, Ligue-
23-15 26 6 5-5
0.655
Solar halo Dew, Ixinbaw, Thunderstorms.
II 22 21 9.8
0.425
9 6 10.0 8.100
10
9.4
3.895
Lightning.
Thunderstorms,
Lightning.
8.6
0.675
Rainbow.
9 7
6.7
Solar halo.
4.8
27 12 25
4.8
0.075
Lightning, Thunder.
7 24 14 22
6.6
0.035
19
12 16
9.8
Solar balo, Lightning.
Solar halo, Lightning, Thunder. Thunderstorms.
3
17
9
9.8
1.495
Thunderstorms.
29
9
9.7
2.310
Lightning.
II
10.0
4.110
Lightning, Thunder,
26 .609 .631
.642
76.7 78.8
76.9
79.6
76.2
.866
91
10
7
10.0 0.380
Lightning, Thunder.
27
.651 .6,6 .696
74.7
77.3
78.1
78.2
74.3
.870
10 94
28
.681 .69+
.710
77.7
75.8
78.4
78.7
74.3
.843
91
29 .697 .696 .702
74.8
79.5
78.9 81.1
74.5
.849
8 90
31
30 .695 .677 .645 .615
.680
78.1
83.3
79.8 84.1
77.1
.838 80
.620
80.1
83.6
79.9
84.1
78.2
.896
85
~ 10 00:00
8
9 8
15:00 09:00 1
6
19 10.0
2.290
8
7 7
14 10.0
3.325
9
19
10
8
9.1
1.400
Lanar halo.
10
16
4
5.1
•
Solur halo.
7
7
14 10
6.0
Sular balo, Lunar corona, Dew, Rainbow.
Sums.
Moans 29.640
29.636 29.643
79.6
83.8
80.3
85.4
77-7
0.884
83
|17.2 | 7.4 18.3 10.6 12.8 7.7
7.3
30.075
In reducing the barometer readings to gravity at Intitude 45o, a constant correction of −0·055 iuch has been applied.
317
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