YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1998	6919	7901	8598	9210	8448	7918	7183	7734	8814	9460	9193	8544	8327
1999	7765	7971	9212	9818	9338	10537	10364	10265	9611	9220	9064	7923	9257
2000	8219	8413	9167	9711	9486	9706	10091	9956	8896	8724	9344	8616	9194
2001	10581	10921	9080	9290	9083	9714	9750	10008	9410	9615	9833	7902	9599
2002	7817	8429	9445	9339	9961	10712	10411	10772	10359	10049	9381	7928	9550
2003								10489	9855	9540	8021	7112
2004	6844	7210	8287	8832	8303	9336	10036	10236	9507	9032	8037	7547	8601
2005
2006
2007
2008

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