Table 5. Percentage errors in m and c for the significant linear regressions using the ordinary least-squares (OLS) and weighted least-squares (WLS) methods.

Crop	Date	Irrigation†	n	${\displaystyle \frac{\delta m}{m}(\mathrm{\%})}$ OLS/WLS	${\displaystyle \frac{\delta c}{c}(\mathrm{\%})}$ OLS/WLS
Wheat	Apr. 12	F	8	12/10	13/12
Corn	Jun. 7	D	9	13/11	12/10
	Jun. 7	F	9	36/18	34/18
	Jun. 11	D	9	31/33	28/32
Cotton	Aug. 9	D	9	28/22	13/10
	Aug. 9	F	9	30/27	15/13
	Aug. 9	D/F	18	23/18	10/8

Note:

^†“D” and “F” represent “deficit” and “full” irrigation.