Table 4. Subjective variables of lighting (n=85).
| Subjective assessment | Min-Max | Mean | SD |
|---|---|---|---|
| Alertness | 1-7 | 3.4 | 1.3 |
| Satisfaction | 0-4 | 2.0 | 0.82 |
| Eye comfort | 0-18 | 9.4 | 3.5 |
| Preference | 2-17 | 8.6 | 2.7 |
| Performance | 0-4 | 2.7 | 0.96 |
| Safety | 0-4 | 1.2 | 1.0 |
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