Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Report on the sanitary condition of the City of London for the year 1894
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METEOROLOGICAL TABLE FOR LONDON, 1894.
(Deduced from Observations, at Greenwich, under the Superintendence of the Astronomer Royal, and compiled from Quarterly Tables,
furnished to the Registrar-General by James Glaisher, Esq., F.R.S.).
The figures in Italics relate to the CITY, and are calculated from observations made at the Guildhall, City, under the Direction of the Engineer.
Winter Jan., Feb., March. | Spring April, May, June. | Summer July. Aug., Sept. | Autumn Oct., Nov., Dec, | Temperature of | Elastic Force of Vapour. | Weight of Vapour in a Cubic Foot of Air. | Degree of Humidity. | Reading of Barometer. | Weight of a Cubic Foot of Air. | *Rain. | †Reading of Thermometer on Grass. | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Air. | Evaporation. | Dew Point. | Air— Daily Range. | Number of Nights it was | Lowest Reading at Night. | Highest Reading at Night. | |||||||||||||||||||||||
Mean. | Diff. from Average of 123 Years. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean (Satn.=100). | Diff from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Mean. | Diff. from Average of 53 years. | Amount. | Diff. from Average of 79 years. | At or below 30°. | Between 30° and 40°. | Above 40°. | ||||||
Sums. | Sums. | ||||||||||||||||||||||||||||
1894. | º | º | º | º | º | º | º | º | º | in. | in. | grs. | gr. | ins. | in. | grs. | grs. | ins. | ins. | º | º | ||||||||
YEAR ... | 49.9 | +1.3 | +0.7 | 47.1 | +0.9 | 44..3 | +0.8 | 14.8 | —1.0 | .299 | +.006 | 3.4 | 0.0 | 81 | —1 | 29.794 | +.020 | 541 | —1 | 26.88 | +1.84 | 52 | 158 | 155 | 12.8 | 56.2 | |||
„ | 50.2 | - | - | - | - | — | - | - | — | - | - | - | - | - | - | - | - | ||||||||||||
Winter Quarter | 41.4 | +2.5 | +1.7 | 39.0 | +0.9 | 36.2 | +1.0 | 12.9 | + 1.1 | .214 | +.007 | 2.5 | +0.1 | 83 | —i | 29.795 | +.023 | 551 | —1 | 5.40 | +0.46 | 37 | 46 | 7 | 12.8 | 45.9 | |||
„ „ | - | - | - | - | — | - | - | — | - | - | - | - | - | - | - | - | |||||||||||||
Spring „ | 53.3 | +1.0 | +0.4 | 49.5 | +0.4 | 45.7 | +0.4 | 19.5 | -0.5 | .310 | +.003 | 3.5 | 0.0 | 74 | -3 | 29.769 | -.013 | 537 | —1 | 5.00 | 0.72 | 7 | 46 | 38 | 25.8 | 50.9 | |||
„ „ | - | — | - | - | — | - | - | — | - | - | - | - | - | — | - | - | |||||||||||||
Summer „ | 58.6 | —1.2 | -1.6 | 55.5 | —0.8 | 52. 7 | -0.3 | 16.5 | .400 | —.004 | 4.5 | —0.1 | 81 | +3 | 29.812 | +.019 | 532 | +2 | 7.54 | + 0.25 | 1 | 15 | 76 | 27.1 | |||||
„ „ | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |||||||||||||
Autumn „ | 46.4 | +2.8 | +2.2 | 44.6 | +3.1 | 42.5 | +2.0 | 10.3 | -1.5 | .274 | +.018 | 3.1 | 0.0 | 87 | -3 | 29.800 | +.050 | 545 | —2 | 8.94 | +1.85 | 7 | 51 | 34 | 26.0 | 54.0 | |||
„ „ | - | - | - | - | - | - | - | — | - | - | - | - | - | — | — | - |
In this Table + and -respectively signify that tl e number in the preceding column is above or below the average to the amount of the quantities to which these signs are affixed.
* The rain gauge at the Guildhall is placed at a height of 51 feet from the ground,
†No thermometer readings on grass are made in the City.