Table 4 Statistical analysis (Kurtosis, Slowness) on data.

From: Calibration and validation of the Angstrom–Prescott model in solar radiation estimation using optimization algorithms

Station

Bandar Abbas

Esfahan

Kerman

Mashhad

Shiraz

Yazd

Kurtosis

0.75

0.43

− 0.06

− 0.71

− 0.07

− 0.92

Slowness

− 0.70

− 0.84

− 0.51

− 0.37

− 1.1

− 0.76

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