[Report of the Medical Officer of Health for Leyton] page 13

Leyton 1933

[Report of the Medical Officer of Health for Leyton]

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Table: TABLE 1— continued.

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TABLE 1— continued.

1933	Cloud.	Rain and other forms of Precipitation.				Weather Number of days of											Wind. Number of Observations at 9 a.m., 3 p.m. and 9 p.m.
	Mean of Observations of amount at 9 a.m. and 9 p.m. (Scale 0-10.)	Total Fall.	Difference from Normal.†	Most in a Day.		Precipitation (0.2 mm and above).	Precipitation (1 mm. and above).	Snow.	Hall.	Thunderstorm.	Persistently Clear.	Generally Clear.*	Generally Overcast.*	Persistently Overcast.	Fog at 9 a.m.	Gale.	Force.			Direction.
		Total Fall.	Difference from Normal.†	Amount.	Day of Month.	Precipitation (0.2 mm and above).	Precipitation (1 mm. and above).	Snow.	Hall.	Thunderstorm.	Persistently Clear.	Generally Clear.*	Generally Overcast.*	Persistently Overcast.	Fog at 9 a.m.	Gale.	Gale	Moderate and Strong Wind	Calm.	N.	N.E.	E.	S.E.	S.	S.W.	W.	N.W.
January	6.7	mm. 27	mm. 16	mm. 4	4 7	14	9	2	0	0	0	3	13	3	12	0	0	91	2	8	20	12	2	12	20	12	5
February	7.1	42	+ 2	10	10	14	7	10	1	1	0	1	15	3	3	0	0	83	1	24	5	1	9	7	20	10	7
March	4.3	61	+ 17	12	16	15	12	0	1	1	6	12	9	0	4	0	0	92	1	1	3	20	9	14	34	9	2
April	5.7	19	— 18	5	25	8	6	1	1	1	0	3	8	1	0	0	0	89	1	5	11	7	2	15	24	19	6
May	6.9	57	+ 13	18	23	17	10	0	0	4	0	1	14	1	0	0	0	92	1	13	14	10	11	15	8	10	11
June	5.5	39	— 12	11	24	9	7	0	0	6	0	5	8	0	0	0	0	89	1	18	5	17	13	6	13	11	6
July	5.5	35	— 22	8	11	11	9	0	0	3	0	2	7	0	0	0	0	93	0	3	5	16	3	10	33	17	6
August	4.9	13	— 43	3	31	7	5	0	0	0	0	4	8	0	0	0	0	93	0	7	6	17	6	7	21	22	7
September	5.3	68	+ 23	21	19	10	8	0	0	1	0	6	5	1	1	0	0	90	0	12	25	18	7	8	10	4	6
October	5.8	38	— 26	7	28	18	12	0	0	0	0	4	11	2	4	0	0	93	0	9	13	11	8	9	18	17	8
November	7.9	22	— 36	5	14	15	6	2	0	0	0	0	17	4	8	0	0	89	1	23	16	8	6	9	6	7	14
December	8.5	9	— 48	4	30	7	3	3	0	0	0	0	20	4	12	0	0	91	2	10	21	24	7	3	14	10	2
Year	6.2	430	—166	21	Sept. 19th	145	94	18	3	17	6	41	135	19	44	0	0	1085	10	133	144	161	83	115	221	148	80
*A day is reckoned as "generally clear" if the average of the estimates of the fraction of sky covered by cloud at 9 a.m., 3 p.m., and 9 p.m. is less than .2, and as "generally overcast" if the average is greater than .8. Days persistently cloudless and days persistently overcast refer to the period midnight to midnight.