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

City of London 1965

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

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TABLE II — Results obtained in 1965 of the daily observations of the concentration of SMOKE by the volumetric method.

MONTH	Rainfall collected in deposit gauge at Guildhall		Golden Lane	POLICE STATIONS
	Rainfall collected in deposit gauge at Guildhall		Golden Lane	Bishopsgate	Cloak Lane	Snow Hill
	Equivalent to		Monthly Average	Monthly Average	Monthly Average	Monthly Average
	Millimetres	inches of rain	Micrograms per cubic metre	Micrograms per cubic metre	Micrograms per cubic metre	Micrograms per cubic metre
January	50	1.98	100	124	113	85
February	11	0.43	91	98	115	88
March	43	1.68	98	121	116	91
April	45	1.76	58	58	76	52
May	45	1.77	40	59	58	40
June	45	1.77	30	49	45	32
July	67	2.64	—	45	46	27
August	49	1.93	—	64	53	36
September	116	4.56	—	132	72	56
October	17	0.66	—	138	116	101
November	66	2.60	—	132	98	75
December	93	3.65	—	134	—	84
Average:
1965	54	2.12	70	96	83	64
1964	44	1.71	88	155	113	77
1963	37	1.45	100	183	138	87
1962	43	1.69	84	217	106	77
1961	42(a)	1.66(a)	90	200	100	80
1960	62	2.46	100	160	130	60
1960-1964	46	1.79	92	183	117	76

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(a) Average for 10 months

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TABLE III — Results obtained in 1965 of the measurement of SULPHUR DIOXIDE by the volumetric and lead peroxide methods.

MONTH	Rainfall collected in deposit gauge at Guildhall		POLICE STATIONS				LEAD PEROXIDE METHOD
	Equivalent to		Golden Lane	Bishops-gate	Cloak Lane	Snow Hill	Golden Lane	Finsbury Circus
	Millimetres	inches of rain	Monthly Average	Monthly Average	Monthly Average	Monthly Average	Mgs, (SO3) per day per 100 sq, cm.
MICROGRAMS PER CUBIC METRE
January	50	1.98	400	500	510	531	4.81	3.39
February	11	0.43	298	388	550	506	3.61	2.74
March	43	1.68	449	550	548	506	4.76	2.78
April	45	1.76	259	355	337	340	4.05	2.25
May	45	1.77	178	282	213	196	2.08	1.15
June	45	1.77	133	226	180	177	1.82	0.88
July	67	2.64	—	225	157	137	—	0.99
August	49	1.93	_	285	196	145	—	0.88
September	116	4.56	_	333	226	179	—	1.12
October	17	0.66	_	527	479	447	—	2.03
November	66	2.60	_	471	522	451	—	3.72
December	93	3.65	—	543	—	471	—	2.74
Averages:
1965	54	2.12	286	390	356	341	3.52	2.06
1964	44	1.71	316	448	377	383	3.06	2.27
1963	37	1.45	300	380	381	345	2.92	2.29
1962	43	1.69	284	478	352	340	2.64	2.15
1961	42(a)	1.66(a)	257	458	286	286	3.01	2.10
1960	62	2.46	257	400	372	257	3.22	2.19
1960-1964	46	1.79	] 283	433	354	322	2.97	2.20

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(a) Average for 10 months
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