Table 1 Means and standard deviations for annual integrated exposure to illuminance and irradiance in the range 450–500 nm during the six time periods of the day
|  |  | Time period of the day (hh:mm–hh:mm) | |||||
|---|---|---|---|---|---|---|---|
|  |  | 04:00–08:00 | 08:00–12:00 | 12:00–16:00 | 16:00–20:00 | 20:00–24:00 | 00:00–04:00 |
Light exposure | Mean (lux*min) | 27,654 | 91,945 | 196,408 | 246,982 | 16,621 | 166 |
N = 15 | SD (lux*min) | 15,922 | 46,024 | 121,967 | 124,183 | 19,830 | 305 |
Light exposure 450–500 nm | Mean (μW/cm2*min) | 3166 | 8226 | 15,791 | 20,162 | 1122 | 20 |
N = 14 | SD (μW/cm2*min) | 3925 | 6742 | 15,143 | 20,966 | 1799 | 41 |