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Questionnaire results
| Score | Brightness | Sharpness | Color | Glare | Overall | |||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| M | SD | M | SD | M | SD | M | SD | M | SD | |
| Colorless | 75.2 | 18.9 | 77.9 | 19.5 | 93.8 | 11.7 | 33.2 | 26.5 | 77.6 | 22.2 |
| Light yellow | 81.4 | 12.8 | 75.7 | 17.2 | 33.3 | 23.1 | 40.0 | 25.8 | 59.8 | 19.4 |
| Dark yellow | 56.8 | 25.7 | 52.2 | 23.6 | 17.7 | 18.1 | 51.1 | 27.7 | 32.7 | 22.3 |
| Light gray | 50.4 | 22.5 | 61.7 | 21.8 | 73.3 | 20.5 | 54.2 | 28.6 | 73.0 | 17.2 |
| Dark gray | 28.2 | 23.4 | 53.2 | 26.4 | 56.2 | 27.3 | 69.3 | 26.7 | 50.0 | 27.3 |
