Current PRISM update package delivered on Year=2012, Month=5, Day=21
Start and end period(yyyymm): 201111 - 201204

VERSION     START_DATE  END_DATE
----------  ----------  ----------
final       1895-01-01  2011-04-30  
quick       2011-05-01  2012-04-30  


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)