| Factor | Mask type | N | ∅ | SD | min | max |
| Drel | regular | 135 | 1.59 | 0.491 | 0.60 | 3.30 |
|
| mirrored | 110 | 1.46 | 0.449 | 0.60 | 3.00 |
|
| blacked-out | 117 | 1.48 | 0.491 | 0.40 | 2.90 |
| Lmax | regular | 135 | 2.28 | 0.326 | 1.50 | 3.00 |
|
| mirrored | 110 | 2.26 | 0.324 | 1.25 | 3.00 |
|
| blacked-out | 117 | 2.38 | 0.292 | 1.50 | 3.00 |