Table 7. MAE values for monthly mean ETo (mm d⁻¹) estimated by K_pan models in years 1998–2019.

Month/Model	April	May	June	July	August	September	October
S	0.301	0.405	0.945	1.327	1.407	0.912	0.514
MS	0.476	0.357	0.460	0.737	0.869	0.541	0.318
WS	0.937	0.750	0.447	0.247	0.209	0.192	0.200
C	0.463	0.360	0.492	0.797	0.920	0.563	0.316
AP	0.362	0.370	0.679	0.992	1.116	0.741	0.444
O	1.835	2.019	2.216	2.269	1.891	1.478	0.938
P	0.454	0.363	0.562	0.846	1.032	0.716	0.456
RW	0.412	0.367	0.572	0.862	0.991	0.616	0.386