Location of test point x	$L (x) / \| L (x) \|$ at $B_{⊥}$	$\bar{L} (x) / \| \bar{L} (x) \|$ at $- B_{⊥}$
$x < b_{1}$	${(- 1)}^{N}$	${(- 1)}^{N + 1} \exp (i π γ)$
$b_{1} < x < a_{2}$	${(- 1)}^{N} \exp (- i π γ)$	${(- 1)}^{N + 1}$
$a_{2} < x < b_{2}$	${(- 1)}^{N - 1}$	${(- 1)}^{N} \exp (i π γ)$
$b_{2} < x < a_{3}$	${(- 1)}^{N - 1} \exp (- i π γ)$	${(- 1)}^{N}$
$⋮$	$⋮$	$⋮$
$a_{N} < x < b_{N}$	−1	$\exp (i π γ)$
$b_{N} < x < a_{N + 1} = a_{1}$	$- \exp (- i π γ)$	1
$a_{1} < x$	1	$- \exp (i π γ)$