Winter Wheat Water Productivity Evaluated by the Developed Remote Sensing Evapotranspiration Model in Hebei Plain, China

Table 2

The average, standard deviation, maximum and minimum values of CWP in all 80 counties from 2001 to 2006 (kg m⁻³).

Seasons	Mean	SD	Max.	Min.
2001	1.24	0.27	1.81	0.43
2002	1.15	0.27	1.68	0.05
2003	1.51	0.30	2.18	0.22
2004	1.33	0.21	1.78	0.60
2005	1.22	0.24	1.72	0.38
2006	1.26	0.24	1.68	0.23