Table 4 The regression analysis for identifying the most effective parameters for ep estimation.
Source | Value | Standard error | t | Pr > |t| | Lower bound (95%) | Upper bound (95%) |
---|---|---|---|---|---|---|
Tmin | 0.433 | 0.019 | 23.220 | < 0.0001 | 0.397 | 0.470 |
Tmax | 0.101 | 0.021 | 4.731 | < 0.0001 | 0.059 | 0.143 |
Tmean | 0.000 | 0.000 | ||||
RHmin | − 0.130 | 0.018 | − 7.142 | < 0.0001 | − 0.165 | − 0.094 |
RHmax | − 0.097 | 0.015 | − 6.644 | < 0.0001 | − 0.126 | − 0.068 |
RHmean | 0.000 | 0.000 | ||||
Insolation | 0.202 | 0.012 | 16.291 | < 0.0001 | 0.178 | 0.227 |
Wind speed | 0.027 | 0.009 | 2.842 | 0.005 | 0.008 | 0.045 |