Table A4.

Mean and standard deviation of the activation mass percentage.

	$t_0$		$t_1$		$t_2$		$t_3$
	$M$	$SD$	$M$	$SD$	$M$	$SD$	$M$	$SD$
Background	0.097	0.001	0.094	0.004	0.092	0.005	0.090	0.006
Occluder	0.096	0.003	0.094	0.005	0.094	0.007	0.092	0.008
Overlap	0.098	0.018	0.131	0.048	0.154	0.067	0.170	0.083
Target	0.112	0.027	0.161	0.063	0.190	0.087	0.209	0.104

Results based on $N=10,000$ samples. Corresponding analysis shown in Figure 8C.