Current PRISM update package delivered on Year=2009, Month=10, Day=12
Start and end period(yyyymm): 200904 - 200909

VERSION     START_DATE  END_DATE
----------  ----------  ----------
final       1895-01-01  2009-04-30  
prelim      2009-05-01  2009-05-31  
quick       2009-06-01  2009-09-30  


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)