TABLE 2
Optimal Value of ε for All Activity Ratios
Activity ratio
VP HD
SharpIR
4.1
0.300
0.250
6.0
0.325
0.275
9.1
0.350
0.300
12.5
0.375
0.300
14.9
0.375
0.300
No background
0.425
0.275
Mean
0.350
0.275
Mean value is rounded to closest of tested values.