Table 3. Mean monthly values of the observed K_pan-obs. (*ETo/E_pan) and computed K_pan by using K_pan models in years 1998–2019.

Month	*ETo/Epan	S	MS	WS	C	AP	O	P	RW
April	0.87	0.83	0.76	0.64	0.77	0.80	0.40	0.77	0.78
May	0.80	0.84	0.77	0.64	0.77	0.80	0.40	0.78	0.78
June	0.73	0.84	0.77	0.65	0.78	0.80	0.39	0.78	0.79
July	0.70	0.85	0.78	0.65	0.78	0.81	0.38	0.79	0.79
August	0.68	0.85	0.77	0.65	0.78	0.81	0.39	0.80	0.79
September	0.69	0.83	0.76	0.64	0.77	0.80	0.40	0.79	0.78
October	0.71	0.81	0.75	0.63	0.75	0.79	0.42	0.79	0.77
Average	0.74	0.84	0.77	0.64	0.77	0.80	0.40	0.79	0.78

Notes.

^*ETo is calculated using FAO-56 PM equation.

S

Snyder

MS

Modified Snyder

WS

Wahed & Snyder

C

Cuenca

AP

Allen & Pruitt

O

Orang

P

Pereira

RW

Raghuwanshi & Wallender