Table 1.

Enumeration of γ-index calculation methods from Sections 1 and 2.

Label	Method Type	Interp. method for Taylor series	Calculation of f(r⃗) at PSD	Reference
A	TAE	-	Tricubic	Low 1998 [2]
B	TAE	-	Linear	Low 1998 [2]
C	0th order	-	Linear	Section 2.4.1
D	1st order	Tricubic	Tricubic	Section 2.4.2.i
E	1st order	Linear	Taylor series	Bakai 2003 [1]
F	1st order	Tricubic	Taylor series	Bakai 2003 [1]
G	1st order	Tricubic and Iterations		Section 2.4.2.iii
H	2nd order	Tricubic	Tricubic	Section 2.4.3.i
I	2nd order	Tricubic	Taylor series	Section 2.4.3.ii