Level

S₁₁

S₁₂

S₁₃

S₁₄

S₂₁

S₂₂

S₂₃

S₂₄

+4

On

Off

Off

On

On

Off

Off

on

+3

On

Off

On

Off

On

Off

Off

on

+2

Off

On

On

Off

On

Off

off

on

+1

On

Off

Off

On

On

Off

on

off

0

On

Off

On

Off

Off

On

Off

On

−1

Off

On

On

Off

Off

On

off

on

−2

On

Off

Off

On

Off

On

On

off

−3

Off

On

Off

On

Off

On

On

off

−4

off

on

on

off

off

on

on

off