An Advanced Hybrid Forecasting System for Wind Speed Point Forecasting and Interval Forecasting

Table 3

The data structure of three sites.

Sites	Train test	Sample size	Data structure
			Max	Min	Mean	Sth.
Site 1	All	1488	15.7	0.5	5.4135	2.3068
	Train	1125	15.7	0.5	5.3825	2.3377
	Test	288	13.3	1.21	5.4135	2.3068
Site 2	All	1488	23.2	0.4	7.3921	4.2494
	Train	1125	23.2	1.0	8.2638	4.3627
	Test	288	9.28	0.4	4.6901	2.3223
Site 3	All	1488	21.1	0.3	5.3096	2.8843
	Train	1125	21.1	0.5	5.6030	3.1751
	Test	288	12.1	0.9	4.4137	2.0628