condition mean min max 4 h after light 9.240735 6.61637 11.8651 8 h after light 6.85346 6.83397 6.87295 12 h after light 6.600020000000001 6.19526 7.00478 4 h after dark 8.564756666666668 6.93625 10.3793 8 h after dark 10.776496666666667 8.31819 12.5519 12 h after dark 13.68887 8.74381 21.1883