[Report of the Medical Officer of Health for Hillingdon] page 84

Hillingdon 1966

[Report of the Medical Officer of Health for Hillingdon]

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MONTHLY AVERAGES FOR SMOKE AND SULPHUR DIOXIDE FOR 1966

Microgrammes Per Cubic Metre

	76 High St., Northwood		West Mead, South Ruislip		Wm. Byrd School, Harlington		Coldharbour Lane, Hayes		Grange Park School, Hayes		High Street, Uxbridge		Oak Farm School, Hillingdon		Drayton Hall, West Drayton
	Smoke	SO2	Smoke	SO2	Smoke	SO:	Smoke	SO2	Smoke	SO2	Smoke	SO2	Smoke	SO2	Smoke	SO2
January	131	_*	119	132	89	112	115	116	80	110	-	-	-	-	-	-
February	62	_*	55	105	39	83	51	87	32	82	-	-	-	-	-	-
March	55	_*	55	93	36	64	48	81	36	70	-	-	-	-	-	-
April	38	-.	45	95	(Instruments removed 1/4/66 to Drayton Hall)		47	92	32	87	43	103	40	107	45	104
May	20	_*	20	72	(Instruments removed 1/4/66 to Drayton Hall)		25	70	15	59	17	68	15	64	18	68
June	14	_♦	18	55	—	—	24	61	16	50	16	64	15	64	19	51
July	11	_*	11	32	—	—	16	33	11	40	10	56	11	60	21	40
August	19	_*	21	23	—	—	27	24	20	35	17	39	21	37	21	28
September	31	_*	35	44	—	—	48	46	34	52	37	50	31	66	44	54
October	44	_♦	44	107	—	—	48	107	35	133	42	95	44	126	45	98
November	73	_*	71	133		—	59	134	41	126	49	110	56	131	63	130
December	57	_*	72	119		—	51	115	42	93	70	94	54	81	34	82

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Environmental Health
* Figures not available.