Algorithm	N_G	$K_{1, R} / σ \sqrt{π a}$	$K_{2, R} / σ \sqrt{π a}$	$K_{1, L} / σ \sqrt{π a}$	$K_{2, L} / σ \sqrt{π a}$
Dual BIEs	5	0.34038	0.46616	0.37789	0.47206
	9	0.33831	0.46603	0.37281	0.47155
	13	0.33769	0.46597	0.37127	0.47139
	17	0.33737	0.46595	0.37049	0.47131
	21	0.33701	0.46593	0.36958	0.47121
NGF	5	0.33859	0.46567	0.36993	0.47118
	9	0.33837	0.46563	0.36940	0.47111
	13	0.33831	0.46563	0.36927	0.47109
	17	0.33829	0.46562	0.36922	0.47108
	21	0.33828	0.46562	0.36920	0.47108
Eigen COD	5	0.33753	0.46584	0.37135	0.47135
	9	0.33732	0.46582	0.37080	0.47129
	13	0.33727	0.46582	0.37067	0.47128
	17	0.33724	0.46582	0.37062	0.47127
	21	0.33723	0.46582	0.37059	0.47127