continuous

blind

≧ 2 to 4

~ 1 x d

~ 0.6 x d

＞ 4 to 6

~ 2 x d

~ 1.0 x d

＞ 6 to 10

~ 3 x d

~ 1.6 x d

＞ 10

~ 4 x d

~ 2.0 x d