Table 1. Brief statistical parameters of the soil temperature and climatic data.

	Data set	Unit	Avr.	Min.	Max.	St. Dev.	Skewness
Training data	T	°C	19.6	7.8	30	6.52	-0.04
	Rs	cal/cm2	12373	3921	19941	4599	-0.11
	W	m/sec	2.33	1.3	3.5	0.46	0.34
	RH	%	69.3	54.4	82.5	6.28	-0.26
	ST-5cm	°C	22.1	6.5	38.1	9.58	0.02
	ST-10cm	°C	21.8	6.8	37.2	9.18	0.0005
	ST-50cm	°C	21.6	9.3	34.1	7.31	-0.0003
	ST-100cm	°C	21.4	11.4	32.1	5.82	0.06
Testing data	T	°C	20.7	9.4	31	6.54	-0.05
	Rs	cal/cm2	12061	4590	17989	4358	-0.18
	W	m/sec	1.99	1.3	2.8	0.37	0.15
	RH	%	63.8	45.6	78.2	7.61	-0.34
	ST-5cm	°C	24.1	7.3	39.3	10.3	0.01
	ST-10cm	°C	23.4	7.4	37.9	9.61	-0.01
	ST-50cm	°C	23.5	10.5	35.8	8.02	-0.03
	ST-100cm	°C	23.1	13.1	33.6	6.59	0.06