Table 2

Meteorological data from the Washington State University Public Agricultural Weather System (WSU-PAWS) weather station north of Prosser, WA.

		Precipitation (mm)		Evaporation (mm)^c
Season	GDD (°C)^a	Annual	Seasonal^b	Annual	Seasonal
^aCumulative growing degree days (base 10°C) from 1 April to 31 October.
^bPeriod from 1 April to 31 October.
^cUS class A pan evaporation (long-term mean for the period 1989–2004).
1997	1427	223	105	1404	1205
1998	1598	207	72	1400	1190
1999	1246	94	33	1479	1224
2000	1384	208	73	1469	1286
2001	1455	167	69	1516	1325
1954–2004	1344	199	91	1491	1274