Performance Analysis of Clear Sky Global Horizontal Irradiance Models: Simple Models Adapted for Local Conditions

Table 2

Percentage statistical error parameters for the models at different locations.

	B–D			R–S			A–B–C–G
	NRMSE	NMBE		NRMSE	NMBE		NRMSE	NMBE
Kokerboom	7.9	−0.5	98.2	4.9	−3.3	99.3	4.6	−3.1	99.4
Auas	7.6	0.4	98.2	5.7	−3.2	99.0	5.5	−3.0	99.1
Arandis	8.1	2.6	98.1	4.5	−0.1	99.4	4.5	0.1	99.4