Estimating Angstrom-Prescott Coefficients for India and Developing a Correlation between Sunshine Hours and Global Solar Radiation for India

Table 5

Estimated values of Angstrom-Prescott parameters “a,” “b,” the correlation coefficient “R,” and the values of the MBE, RMSE, and MPE for the seven meteorological stations.

Location	Correlation coefficient R	Estimated Angstrom-Prescott parameters			MBE	RMSE	MPE%
		a	b	𝑎+𝑏
Delhi	0.81	0.1310	0.6043	0.7353	−0.105	1.1243	0.3408
Jodhpur	0.81	0.1257	0.6002	0.7259	0.0758	1.2166	0.3650
Jaipur	0.51	0.3359	0.3328	0.6687	−0.0583	2.1703	1.1058
Ahmedabad	0.88	0.1212	0.5822	0.7034	−0.0517	1.4768	0.7692
Mumbai	0.91	0.1053	0.5698	0.5751	−0.0517	1.4531	0.7100
Kolkata	0.84	0.0518	0.6443	0.6951	0.0242	1.3019	0.0025
Pune	0.96	0.0937	0.6315	0.7252	0.0092	0.7528	0.2058