Comparison of Weibull Estimation Methods for Diverse Winds

Table 2

Sector-wise wind frequency and topographical characteristics. The sectors are grouped based on similarities of roughness and obstacles.

Sector	Center	Fre. (%)	Group	Terrain	Roughness	Obstacles
1	0	45.65	I		Grassland	None
2	30	11.21				Small cottages
3	60	1.95	II	Flat; 50 m a.s.l.	Urban area	Village with max 6.5 m tall houses
4	90	1.41
5	120	1.3
6	150	3.7	III			University with tall buildings
7	180	12.59
8	210	7.59	IV	Hilly; up to 350 m a.s.l. with gentle slope	Grassland	None
9	240	2.75				Distant wind farm
10	270	2.09				None
11	300	4.66
12	330	5.07