Classification system for radar diagram.

Radar diagram point	WCA, θ [deg]	WSA, α [deg]	Retention ratio, η [%]
1	θ ≤ 120	α > 33	η ≤ 85
2	120 < θ ≤ 125	29 < α ≤ 33	85 < η ≤ 86
3	125 < θ ≤ 130	25 < α ≤ 29	86 < η ≤ 87
4	130 < θ ≤ 135	21 < α ≤ 25	87 < η ≤ 88
5	135 < θ ≤ 140	17 < α ≤ 21	88 < η ≤ 89
6	140 < θ ≤ 145	13 < α ≤ 17	89 < η ≤ 90
7	145 < θ ≤ 150	9 < α ≤ 13	90 < η ≤ 91
8	150 < θ ≤ 155	5 < α ≤ 9	91 < η ≤ 92
9	155 < θ ≤ 160	1 < α ≤ 5	92 < η ≤ 93
10	θ > 160	α ≤ 1	η > 93