[Report of the Medical Officer of Health for London, City of ] page 13

City of London 1967

[Report of the Medical Officer of Health for London, City of ]

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TABLE 1 — Results obtained in 1967 of the monthly observations of rainfall and deposited matter by means of the deposit gauge

MONTH	Rainfall collected in deposit gauge at Guildha 11		DEPOSITS
	Equivalent to		Insoluble	Soluble	Total
	Millimetres	Inches of rain	Tons per square mile
January	37	1.46	12.07	11.76	23.83
February	44	1.74	39.73	12.58	52.31
March	31	1.21	23.45	8.06	31.51
April	58	2.30	23.32	10.47	33.79
May	85	3.35	13.15	16.66	29.81
June	60	2.37	24.00	12.75	36.74
July	29	1.13	19.95	12.20	32.15
August	56	2.21	13.66	13.49	27.16
September	54	2.11	14.85	13.94	28.79
October	98	3.85	9.28	10.16	19.44
November	37	1.46	15.98	10.94	26.92
December	60	2.36	22.57	9.76	32.32
Averages: 1967	54	2.13	19.33	11.90	31.23
1966	49	1.94	17.85	10.11	27.96
1965	54	2.12	19.02	9.96	28.98
1964	44	1.71	15.13	12.49	27.63
1963	41	1.63	12.48	10.07	22.55
1962	40	1.58	14.21	8.49	22.69
1962 - 1966	46	1.80	15.74	10.22	25.96

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TABLE II — Results obtained in 1967 of the daily observations of the concentration of SMOKE by the volumetric method

MONTH	Rainfall collected in deposit gauge at Guildhall		Public Services Building	Snow Hill Police Station
	Equivalent to		Monthly Average	Monthly Average
	Millimetres	Inches of Rain	Microgrammes per cu. metre	Microgrammes per cu. metre
January	37	1.46	83	87
February	44	1.74	75	73
March	31	1.21	36	46
April	58	2.30	46	44
May	85	3.35	39	37
June	60	2.37	28	29
July	29	1.13	27	28
August	56	2.21	30	38
September	54	2.11	40	34
October	98	3.85	28	42
November	37	1.46	86	76
December	60	2.36	83	69
Averages:
1967	54	2.13	50	50
1966	49	1.94	59	56
			(Golden Lane)
1965	54	2.12	70	64
1964	44	1.71	88	77
1963	41	1.63	100	87
1962	40	1.58	84	77
1962- 1966	46	1.80	80	72

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