Station: Royal Ubservatory, Hongkong
Height above M.S.L. 109 ft.
Barometer at M.S.L. and
Day.
reduced to gravity at
latitude £57.
Air Temperature.
1917.
Month of September.
Tension of
Vapour,
Relative
Humidity.
Wind.
Direction and Force.
Amount of
Cloud.
Long. 7 36 41a 8 E.
Lat. 22° 18' 13-2" N.
Rainfull.
Remarks.
(Zb 9 )
1917.
7 1.
I P.
9 p.
7 n.
P.
9 p.
Max.
Mio.
Daily Daily Monna. Menus,
Daily
7.
I p.
9 P.
Means.
Dir. Val. Dir. | Vel. Dir. Vel.
Fa.
| points |in.p.li |points.m.p.hpoints. m.p.h.
(0-10).
ins.
Sept.
ing:
Jas.
.
է
*
I
29.754
29.748
29.745
81.0
$5.7
81.0
86.5
78.9
0.900
81
7
6 13 18
5
1.9
+
Unusual visibility,
Dew.
2.
-740
.698
.689
80.3
$6.9
82.8
87.3
78.5
|
.890
לי
3.1
A
Unusual visibility, Dew,
3
.641
.649
.676
82.7
56.0
81.1
86.1
77.8
.902
7
19
22
8.5
0.420
Lunar corona, Rainbow,
Thunder-
.643
.668
.691
21.0
80.H
80.9
85.0
78.8
.907
9
17
15
10
8.5
0.345
Thunderstorms,
[storms.
10
II
1 L
16
7
6.5
0.180
Unusual visibility.
.704
.724
.774
79.8
8+-+
Ro.7
85.8
79.1
.915
6
-778
.787
.798
81.3
85.6
80.4
86.3
-8.9
४ 16
I
4.2
0.065
.910
746
.723
749
79.2
85.1
81.6
88.s
77.5
.897
+
22
716
-743
79.4
86.4 81.8
87.3
77-7
.864
23 5
22
1
4.6
8
17
4.2
77
751
-744
.825
80.6
87.9
82.4
88.8
80.4
.870
75
32
TO
.78+
-795
77+
79.8
87-4
81.2
88.9
79.5
.766
67
2
.783 .801
774
80.0
84.6
82.3
88.2
78.5
.765
12
.699
.669
81.8
86.6
83.5
88.7
81.0
*61
32
awew
5
13
2
4.1
2
за #
4.3
Hazo.
4
5
]
3.1
26
25
7
4.7
13
728
.-61
814
79.8
87.3
82.9
89.2
79.1
.822
72
:
23
8
3.9
14
.800
.886
Ro.3
86.5
77-5
87.7
76.4
.889
83
1 10 19
5.3 0.280
Thunder,
15
.869
.85 1
.880
-8.0
85.5
79.7
87+4 76.3
.859 81
1 12 11
3.8
16
.867
.869
.857
78.7
86.2
80.2
87.1
77.0
.859
81
17
.841
.851
.880
81.6
85.1
81.5
86.8
78.7
.898 81
18
.893
.892 .933
81.6
66.2
81.8
86.9
79.3 !
.882
19
.925
-935
.907
81.0
86.8
81.7
87.7
80.0
.881
77
20
.913
.893
-918
79.5
87.7
82.7
89.9
78.7
.875
21
.910
.912
.906
81.8
77.6
81.9
84.7
74-5
.825
22 .883 .874
.88z
79.3
84.1
80.2
23
.844
.848
.860
77-3 83.8
79.3
83.5 7+.3
85.3 76.3
.814
.825
24
.869
.87+ .873
78.3 82.5
79.6
83.9
77.4
.791
25 .857
.832 .863 79.2
84.6
81.3
86.1
79.1 4785 73
26
.849
.852
.912
79.3
85.4
82.1
86.3
78.2
.822
27
.871
.860 .857
80.3
85.1
81.6
85.6
79-9
.823
28
.8zz
.784 .809
80.2
82.1
80.7
83.8
fo.1 .809
ZZA KRKROARKKK
10
2.9
10
12
79
77
6
76
200
8 15 S TO 3 9 14 9
9
3.1 0.010
12
1.5
10
2.0
-
10
16
7 6
4.3
9 20
28
7.2
9
20
6.7
80
10
16
6.9
0.960
76
7
17
9.6 0,015
17
7.0
75
9
6
8 16
6.2 0.115
75
4 12
20 7 18
5.5
6.2
75 7 20
19
9
1.040
Unusual visibility, Dew, Lightning.
Solar halo, Solar corona, Slight fog,
Haze, Lightning.
Solar balo, Thunderstorms.
Lightning. Lightning.
Dew.
Dew,
Solar corona.
Rainbow.
Unusual visibility.
Lightning.
Dew, Lightning, Thunderstorms,
Solar halo, Lightning.
Solar halo, Slight fog, Lightning, Thunder,
Lunar hulo, Lightning.
Lunar halo, Lightning.
Lunar halo.
Lunar bulo, Lightning.
[Lightning.
29
.790 .789 ,811
79-7
82.8
79.6
84.0
76.9 .848
81
30
.820
.828
.878
75.8
83.3
78.7
84-5
74.8
-775
78
7 10
16 10 10 10 18 7
6.1
4
0.185
Haze.
5.0
1.265
Sums.
Means 29.803
29.801
29.823
80.0
85,0
81.1
86.6
78.1
0.848
77
7.0 6.7 10.0 14.8 8.9 8.4
5.0
4,880
In reducing the harometer readings to gravity at latitude 45o, a constant correction of −0·055 inch has been applied.
319
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