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Means ± SE of the normalized subjective fatigue and sleepiness during each session.
| Light Condition | Session 1 | Session 2 |
|---|---|---|
| subjective fatigue | ||
| 3730 K | 1.153 ± 0.031 | 1.277 ± 0.044 |
| 7343 K | 1.116 ± 0.036 | 1.145 ± 0.048 |
| 2564 K | 1.086 ± 0.039 | 1.215 ± 0.048 |
| DL | 1.321 ± 0.042 | 1.43 ± 0.053 |
| subjective sleepiness | ||
| 3730 K | 1.178 ± 0.056 | 1.363 ± 0.096 |
| 7343 K | 1.043 ± 0.041 | 1.17 ± 0.071 |
| 2564 K | 1.098 ± 0.049 | 1.223 ± 0.085 |
| DL | 1.443 ± 0.068 | 1.595 ± 0.077 |
