Table 3 - Ambient Air Quality Data
Connecticut Sulfur Dioxide

Map of annual average SO2 concentration

Annual average sulfur dioxide (SO₂) concentration in ppm for sites in Connecticut. The annual average SO₂ standard is 0.03 ppm.

NAAQS = 0.14 ppm

Graph of second maximum 24 hour value vs. year

NAAQS = 0.03 ppm

Graph of annual arithmetic mean vs. year

Units: 007 ppm

									MAX 24-HR			MAX 3-HR			MAX 1-HR
Site ID	P O C	M T	City	County	Address	YR	REP ORG	# OBS	1ST	2ND	OBS > ST	1ST	2ND	OBS > ST	1ST	2ND	ARITH MEAN	METH
09-001-0012	1	1	Bridgeport	Fairfield	115 Boston Terrace	97	001	8289	0.039	0.031	0	0.074	0.07	0	0.123	0.109	0.007	60
09-001-0017	1	2	Greenwich	Fairfield	Greenwich Point Park	97	001	8314	0.027	0.025	0	0.05	0.041	0	0.054	0.051	0.004	60
09-001-1123	1	2	Danbury	Fairfield	Trailer, W. Connecticut State University	97	001	8295	0.027	0.024	0	0.037	0.029	0	0.044	0.035	0.005	60
09-001-2124	1	2	Stamford	Fairfield	Hillandale Avenue	97	001	8334	0.037	0.03	0	0.042	0.041	0	0.051	0.05	0.006	60
09-001-9003	1	3	Westport	Fairfield	Sherwood Island	97	001	2093	0.031	0.026	0	0.043	0.04	0	0.052	0.047	0.006?	60
09-003-1005	1	2	Enfield	Hartford	Shaker Road	97	001	8193	0.024	0.021	0	0.032	0.03	0	0.036	0.032	0.004	60
09-003-1018	1	1	Hartford	Hartford	Corner of Sheldon St. and Columbus BLVD	97	001	8347	0.027	0.024	0	0.037	0.037	0	0.04	0.039	0.004	60
09-003-2006	1	1	East Hartford	Hartford	85 High Street	97	001	8335	0.029	0.025	0	0.036	0.034	0	0.037	0.037	0.005	60
09-009-1003	1	2	East Haven	New Haven	Animal Shelter, Commerce Street	97	001	8248	0.025	0.024	0	0.04	0.035	0	0.047	0.047	0.005	60
09-009-1123	2	1	New Haven	New Haven	715 State Street	97	001	8279	0.041	0.032	0	0.058	0.057	0	0.089	0.066	0.006	60
09-009-2123	1	2	Waterbury	New Haven	Shed Meadow and Bank Street	97	001	8279	0.024	0.02	0	0.032	0.031	0	0.048	0.038	0.005	60
09-011-0007	1	2	Groton	New London	Fire Headquarters	97	001	8337	0.026	0.022	0	0.045	0.033	0	0.05	0.05	0.004	60
09-013-0003	1	2	Mansfield	Tolland	North Frontage Road	97	001	8341	0.019	0.015	0	0.031	0.025	0	0.038	0.031	0.003	60

? indicates that the mean does not satisfy summary criteria

Steven McDougall / swmcd@theworld.com / 1998 September 27