condition mean min max 0 h after light 4.073555 2.07471 6.0724 2 h after light 9.72396 8.14462 11.3033 4 h after light 4.333715 4.12929 4.53814 8 h after light 6.99338 6.72868 7.25808 12 h after light 15.73755 11.93 19.5451 2 h after dark 7.900055 6.20757 9.59254 4 h after dark 8.867745 7.96421 9.77128 8 h after dark 7.501365 4.84833 10.1544 12 h after dark 3.13137 3.02333 3.23941