[Report of the Medical Officer of Health for London, City of ] page 16

City of London 1968

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

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TABLE II — Results obtained in 1968 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	64	2.50	77	80
February	26	1.01	69	75
March	24	0.93	44	50
April	42	1.66	47	36
May	48	1.90	36	27
June	54	2.13	30	30
July	67	2.63	27	23
August	87	3.43	25	12
September	145	5.73	34	39
October	64	2.54	61	59
November	42	1.64	73	59
December	69	2.71	91	84
Averages: 1968	61	2.40	51	48
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
1963 - 1967	48	1.91	73	67

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TABLE III — Results obtained in 1968 of the measurement of SULPHUR DIOXIDE by the volumetric method

MONTH		Rainfall collected in deposit gauge at Guildhall		Public Services Building	Snow Hill Police Station
		Equivalent to		Monthly Average
		Millimetres	Inches of Rain	Microgrammes per cu. metre
	January	64	2.50	404	443
	February	26	1.01	397	447
	March	24	0.93	303	328
	April	42	1.66	291	301
	May	48	1.90	209	218
	June	54	2.13	136	154
	July	67	2.63	142	111
	August	87	3.43	124	84
	September	145	5.73	206	157
	October	64	2.54	280	245
	November	42	1.64	369	305
	December	69	2.71	467	368
Averages: 1968		61	2.40	277	263
	1967	54	2.13	271	292
	1966	49	1.94	284	328
				(Golden Lane)
	1965	54	2.12	286	341
	1964	44	1.71	316	383
	1963	41	1.63	300	345
	1963 - 1967	48	1.91	291	338