Decomposition-Based Multistep Sea Wind Speed Forecasting Using Stacked Gated Recurrent Unit Improved by Residual Connections

Table 2

Statistical indices of three sea areas.

Wind speed (m·s^−1)	Area 1	Area 2	Area 3
Maximum eastward speed	13.5472	8.9360	1.0977
Maximum westward speed	11.3178	24.1463	9.3708
Minimum absolute speed	0.0093	0.0269	0.1613
Average speed	−5.7063	−7.4246	−5.1017
Standard deviation	1.9026	3.0145	1.3896
Average speed of trendy series	−5.6236	−7.1146	−4.8573
Standard deviation of trendy series	1.6162	2.8849	1.2616
Maximum speed of seasonal series	9.3964	12.7637	7.7910
Standard deviation of seasonal series	0.4388	0.4328	0.3293