502
Date.
6
Table V.
Errors of Time-Ball in 1895.
means too late.
+ means too early.
January. Feb.
March.
April.
June. May.
July.
August. Sept. October.
Nov.
Dec.
$.
S.
0.1
0.1
0.1
0.1
0.1
0.1
-0.2
0.1
0.1
-0.3
0.1
0.1
0.1
+0.2
0.1
+0.2
0.1
+0.3
0.1
0.1
+0.3
0.1
0.1
+0.5
0.1
10
0.1
+0.6
+0.2
11
0.1
+0.6
+0.2
12
0.1
+0.2
+0.3
13
0.1
0.1
+0.2
14
0.1
+0.2
+0.2
15
0.1
+0.2 +0.4
16
0.1
+0.2
+0.5
17
0.1
+0.2
+0.5
29
30 31
22857******88
18
0.1
0.1
+0.6
433838983333 :3 : 1333
S.
S.
ያ.
$.
.S.
S.
*.
5.
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
+0.2
0.1
+0.2
0.1
-0.3
0.1
0.1
---
+0.2
0.1
-0.2
+0.2
0.1
0.1
0.1
+0.2
O.I
+0.2
+0.2
0.1
+0.2
0.1
0.1
-0.4
0.1
0.1
0.1
0.1
+0.2
+0.2
-0.5
0.1
0.1
0.1
0.1
0.1
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
O.I
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
+0.2
-0.7
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
+0.4
0.1
0.1
0.1
0.1
0.1
0.1
0.1
+0.2
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
+0.3
0.1
0.1
0.1
+0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1.
+0.2
0.1
0.1
-0.3
0.1
-0.2
0.1
0.1
+0.2
0.1
-0.2
-0.3
0.1
-0.3
0.1
0.1
0.1
-0.2
-0.2
0.1
0.1
-0.4
0.1
0.1
0.1
-0.3
-0.2
0.1
0.1
-0.2
0.1
19
20
21
23
24
26
-0.3
13333338 : 18838
0.1
0.1
-0.5
0.1
0.1
-0.2
+0.8
+0.3
0.1
0.1
0,1
0.1
0.1
0.1
0.1
0.1
+0.7
+0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.3
0.1
+0.4
0.1
0.1
0.1
0.1
0.1
0.1
-0.2
-0.3
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.4
+0.2
0.1
0.1
+0.2
0.1
0.1
0.1
0.1
+0.2
0.1
+0.3
0.1
+0.2
0.1
0.1
0.1
+0.2
0.1
0.1
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
+0.2
-0.2
0.1
-0.2
+0.2
0.1
-0.2
0.1
0.1
0.1
0.1
0.1
0.1
-0.3
0.1
0.1
-0.3
0.1
0.1
0.1
0.1
0.3
0.1
+0.2
-0.2
0.1
0.1
0.1
0.1
0.1 +0.5
0.1
0.1
0.1
388
0.1
-0.2
-0.2
-0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
...
0.1
183338: 188888
0.1
0.1
0.1
12. There fell only half the normal amount of rain during 1895. The excessive drought had no influence on either pressure or temperature. The relative humidity was only two per cent. less than usual. The number of hours with bright sunshine was 149 in excess. The duration of rain was 158 hours less than usual and the intensity of rain was only six-tenths of the average. The wind was normal and the cloudiness very slightly below the mean but the level of the clouds was higher than usual. During the month of August the wind is generally very light and in consequence the daily variation in direction is great, but in 1895 the direction backed throughout the 24 hours. It probably backed most quickly about 7 a. or 8 a.
13. Slight shocks of earthquake were noticed on the 30th August at 5.45 p. and other shocks occurred during the following night.
14. The cisterns of the barograph and standard barometers are placed 109 feet above M.S.L. The bulbs of the thermometers are rotated 108 feet above M.S.L., and 4 feet above the grass. The solar radiation thermometer is placed at the same height. The rim of the rain-gauge is 105 feet above M.S.L., and 21 inches above the ground.
15. The monthly Weather Reports are arranged as follows:-
Table I. exhibits the hourly readings of the barometer reduced to freezing point of water, but not to sea level, as measured (at two minutes to the hour named) from the barograms.
Tables II. and III. exhibit the temperature of the air and of evaporation as determined by aid of rotating thermometers. Table II. exhibits also the extreme temperatures reduced to rotating thermometer. Table III. exhibits also the solar radiation (black bulb in vacuo) maximum tempera- tures reduced to Kew arbitrary standard.
Table IV. exhibits the mean relative humidity in percentage of saturation and mean tension of water vapour present in the air in inches of mercury, for every hour of the day and for every day of the month, calculated by aid of Blanford's tables from the data in Tables II, and III.
Table V. exhibits the duration of sunshine expressed in hours, from half an hour before to half an hour after the hour (true time) named.