Mean Monthly Temperature and Relative Humidity in the Underground Chamber and in the Open Air during the year 1928.
Month 1928 In Underground Chamber In the Open Air Excess of Underground Chamber over Open Air Temperature Relative Humidity Temperature Relative Humidity Temperature Relative Humidity January, 69.6 61.6 83 February, 69.9 58.5 82 +0.2 +11.2 March, 69.6 63.2 87 6.4 +11 April, 71.1 83 70.9 81 +2 May, 74.1 84 77.4 86 3.3 +8 June. 76.2 94 79.9 83 3.7 +11 July, 78.5 94 83.5 80 5.0 +14 August, 80.2 92 82.4 81 2.2 +8 September 80.3 87 81.6 1.3 +12 October, 78.4 75 85 75.1 November, 76.7 69 89 67 +3.3 +20 December, 74.3 65 90 65.6 +3.3 +22 Range, 10.6 24.8 22II. METEOROLOGICAL INSTRUMENTS.
All the meteorological instruments were maintained in good order throughout the year.
The thermometers in use were compared with Kew Standard No. 647 in Summer and Winter.
The working of the electric contact on the Nakamura Pluviograph is tested daily at 11h.
The Beckley and Dines Baxendell Anemographs were oiled and the orientation of the vanes checked once a month. The Dines Baxendell instrument continues to work satisfactorily, except at very low velocities when its action is uncertain.
- F 2
Mean Monthly Temperature and Relative Humidity in the Underground Chamber and in the Open Air during the year 1928.
Excess of Under-
In Underground Chamber.
In the Open Air.
Month 1928.
ground Chamber over Open Air.
ature Humidity ature
Temper-Relative Temper- Relative Temper- | Relative
Humidity ature Humidity
O
O
ช
January,
69.6
61.6
83
February,.
69.9
58.5
82
+ 0 +112
| 2
15
March,.... 69.6
632
87
6.4
II
April,
711
83
70'9
81
May,
741
94.
774
86
3.3
+ 8
June.
76.2
94
79'9
83
3་7
...
July,
78.5
94
83.5
80
5°C
+14
August, 80.2
92
82°4
8+
2.2
+ 8
September
80°3
87
81.6
1.3
+12
October,
78.4
85
75'1
November, 76.7
89
69.3
67
December, 74.3
90
656
+++
+ 3°3
+ 20
+22
"..
+18
Range,.
10°
27
248
22
II. METEOROLOGICAL INSTRUMENTS.
All the meteorological instruments were maintained in good order throughout the year.
The thermometers in use were compared with Kew Standard No. 647 in Summer and Winter.
The working of the electric contact on the Nakamura Pluviograph is tested daily at 11h.
The Beckley and Dines Baxendell Anemographs were oileri and the orientation of the vanes checked once a month. The Dines Baxendell instrument continues to work satisfactorily. except at very low velocities when its action is uncertain.
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