Interval Prediction Method for Solar Radiation Based on Kernel Density Estimation and Machine Learning

Table 3

Annual mean values of variables in test set.

Year	AT (°C)	RHU (%)	SD (h)	DGSR (MJ/m^2)
2013	10.81	42.56	9.75	16.33
2014	10.38	40.45	9.79	16.24
2015	11.47	45.08	9.22	15.55
2016	11.66	44.23	9.08	19.50