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API Pollution Index Monthly Summary

Year : 2010 January February Year : 2009 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2008 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2007 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2006 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2005 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2004 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2003 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2002 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2001 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 2000 January February March First Quarter April May June Second Quarter July August September Third Quarter October November December Fourth Quarter Year : 1999 July August September Third Quarter October November December Fourth Quarter

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