Current PRISM update package delivered on Year=2009, Month=7, Day=12
Start and end period(yyyymm): 200901 - 200906

VERSION     START_DATE  END_DATE
----------  ----------  ----------
final       1895-01-01  2009-01-01  
prelim      2009-02-01  2009-02-28  
quick       2009-03-01  2009-06-30  


Legend:
------
Final  = Grids using NCDC final COOP data
Prelim = Grids using NCDC preliminary COOP data (later replaced with Final)
Quick  = Grids using NCDC quicklook/provisional COOP data 
		(later replaced with Prelim & Final)