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UPPLEMENT TO THE HONGKONG GOVT GAZETTE OF 13TH DEC., 1884. 937
1 exhibits the hourly readings of the height of the Barometer reduced to 32.0 Fahrenheit, Sea Level, as measured (at two minutes to the hour named) from the Barograms. The of the Barometer was 29.581, the Highest was 29.806 at 10 a. on the 4th, and the 29,362 at 6 p. on the 21st. The Barometric Tide amounted to 0.061.
III exhibits the hourly readings of the Temperature (Dry Bulb Thermometer) as measured Thermograms (at two minutes past the hour named), and also the Extreme Temperatures hy. The Mean Temperature was 82.2, the Highest was 93.1 at 3h. 12m. p. on the 20th Lowest was 74.1 at 0h. 18m. p. on the 2nd.
de III exhibits the hourly readings of the Temperature of Evaporation (Damp Bulb Thermo- measured from the Theranograms (at two minutes past the hour named) and also the Solar „ten Maximum (Black Bulb) and Terrestrial Radiation Minimum Temperatures.
Table IV exhibits the Mean Relative Humidity in percentage of saturation (the humidity of air saturated with moisture being 100) and Mean Tension of Aqueous Vapour present in the air expressed in inches of mercury, for every hour in the day and for every day in the month. The Mean Tension, which exhibits a small daily variation, was 0.908. The Mean Relative Humidity, which exhibits a great daily variation, was 83.
Table V exhibits the Duration of Sun-shine as registered by aid of the Sun-shine, Recorder from half an hour before to half an hour after the hour named. The Sun shone 184.5 hours during the
month.
Table VI exhibits the amount of Rain registered from half an hour before to half an hour after the hour named. The Total Rain-fall during the month was 13.075 inches. It rained during $1 hours. The greatest Hourly Rain-fall was 1.760 at 8 a. on the 21st.
Table VII exhibits, for every hour in the day, the Velocity of the Wind and its Direction in numbers (8-E, 16-S, 24-W, 32-N) as measured from the Anemograms. The Velocity is the number of miles traversed by the Wind, from half an hour before to half an hour after the hour named. The Direction is read off at the hour, except when the Wind is very light and changeable, when the average Direction during the hour is estimated, taking into account the Velocity from different quarters. The Direction is not noted when the Velocity is below 1.5 miles an hour.
The Mean Velocity was 14.3 miles an hour. It was greatest during the middle of the day. The Velocity exceeded 35 miles an hour on the 6th, the 7th, the 8th, the 28th, the 29th, the 30th and the 31st.
The Total Distance travelled by, as well as the Duration and average Velocity of Winds from different quarters were as follows:-
Direction.
Total Distance.
Duration.
Miles.
Hours.
Velocity.
Miles per hour.
N
76
15
5.1
NE
714
50
14.3
E
..... 5,074
236
21.5
SE
1,478
76
19.5
$
1,001
109
9.2
SW
1,205
88
13.7
W
784
85
9.2
NW
254
45
5.6
Calm
25
10
0.6
Table VIII exhibits, for every hour in the day, the Velocity of the Wind reduced to 4 and also to 2 Directions, as well as the Mean Direction of the Wind.
Table IX exhibits the Direction (to two points) and Force of the Wind (0-12) at Victoria Peak. The Average Force of the Wind was 3.8 corresponding to 22 miles an hour. The Sea Disturbance (0-9) exhibited in the same table has been derived from observations made at Cape d'Aguilar.
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