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. Author manuscript; available in PMC: 2012 Aug 1.

Published in final edited form as: Atmos Environ (1994). 2011 Aug 1;45(26):4412–4420. doi: 10.1016/j.atmosenv.2011.05.043

Table 2b.

Summary of Los Angeles NO_x snapshot concentrations (ppb)

		Summer	Autumn	Winter
All Sites	Mean	34.2	75.1	95.3
All Sites	Variance	132.1	551.0	728.4

Clusters	Mean	34.3	74.7	96.0
	Between Variance	89.6	450.5	620.4
	average w/in Variance	65.9	152.5	170.0

Individual Sites	Mean	31.2	77.7	91.0
Individual Sites	Between Variance	144.8	359.2	571.8