Page:Blackwood's Magazine volume 001.djvu/122
METEOROLOGICAL TABLE.
Extracted from the Register kept on the Banks of the Tay, four miles east from
Perth, Latitude 56° 25′, Elevation 185 feet.
JANUARY 1817.
Means.
Thermometer. Mean of greatest daily heat,
cold,
temperature, 10 A.M.
10 P.M.
of daily extremes,
of 10 A.M. and 10 P.M.
of 4 daily observations,
Barometer. Mean, 10 A.M. (temp, of mer. 48)
10 P.M. (temp, of mer. 54)
of both, (temp, of mer. 51)
Hygrometer (Leslie's). Mean dryness, 10 A.M. 10 P.M. of both,
Rain, 1.901 in. Evaporation, 1.400 in
51.7
38-8
38.2
39.2
38.5
38.9
In.
29.467
29.507
29.487
7".8
7.1
7.5
Extremes,
Thermometer. Greatest heat, 50th day, Greatest cold, loth, Highest, 10 A.M. 50th.
Lowest, 15th,
Highest, 10P.M. K'lh,
Lowest, 14th,
Barometer. Highest, 10 A.M. 31st,
Lowest, 17th,
Highest, 10 P.M. 31st,
Lowest, 20th,
Hygrometer. Highest, 10 A.M. 11th,
Lowest 1th,
Highest, 10 P.M. 13th, Lowest, 5th,
56.0
25.0
52.0
28.0
46.5
27.0
30.330
28. 175
30.360
8.340
30.0
0.0 15.0
0.0
Fair days 19; rainy days 12. Wind West of meridian, including North, 21 ; East of meridian, including
South, 7.
Extremes.
FEBRUARY.
Means.
Thermometer. Mean of greatest daily heat,
cold,
temperature, 10 A.M.
10 P.M.
of daily extremes,
of 10 A.M. and 10P.M.
of 4 daily observations,
Barometer. Mean, 10 A.M. (temp, of mer. 50)
10 P.M. (temp, of mer. 52)
of both, (temp, of mer. 51)
Hygrometer (Leslie's). Mean drynt-ss, 10 A.M.
10 P.M.
of both,
Rain, 1.684 in. Evaporation, 1.753.
Fair days 13; rainy days 15. Wind West of meridian, including North, 27; East of meridian, including
South, 1.
46.7 35.3 41.6 38.7 41.0
Thermometer. Greatest heat, 28th day. Greatest cold, 10th, Highest, 10 A.M. 17th, Lowest 13th,
54.5 29.5 50.0 32.0
40.1 40.6
Highest, 10 P.M. 7th, Lowest 12th,
49.5 32.0
In.
) 29.515
Lowest, 21st,
28.900
29.481 ) 29.498
Highest, 10P.M. 1st,
30.410 28.900
. 12.1 . 7.2
Hygrometer. Highest, 10 A.M. 27th, Lowest 13th,
25.0 2.0
, a.6
Highest, 10 P.M. 14th, Lowest 4th.
15.0 0.0
Meant.
Thermometer. Mean of highest every day, ............ lowest, -
............ 10A.M. - -
............ IOP.M. - -
............ highest and lowest,
............ 1(1 A.M. and 10 P.M.
............ 1 daily observations,
i3.irometer. Mean of Id A.M. - - - ............ IOP.M. - - -
............ 2 daily observations, -
verometer. Mean of 10 A.M. - - - ............ IOP.M. - - -
............ 2 daily observations -
R-in, .958 in. Evaporation, 2.010 inches.
45.2 1 1 j.j.822 40.113
39.532 58.508
3U.020 L'!i.5. r ;i
29.532 18.097
- . ."'-"-'
1-'."09
Extremes,
Thermometer. Greatest heat, li'th dav, Greatest cold, 20th, " - Highest, 10A.M. 13th,
Lowest i'Oth,
Highest, lOl'.M. nth,
Lowest 20th,
Barometer. Highest, 10A.M. 17th,
Lowest, 6th,
Highest, IOP.M. 17th.
Lowest 3d,
Hygrometer. Highest, 10 A.M. 13th,
Lowest, 5th,
Highest, 10 P.M. 18th, Lowest, 3d,
.12.500 '-'_'. IHM 48.000 26.000 4C.500 23.000 30.250 28.600 50.150 28.46.5 50.000 5.0011
it;, i ii KI
0.000
Number of fair days 18; rainy days 13. Wind from Western side of horizon, including the North, 28;
from Eastern sied, including the South, 3.