condition mean min max 0 h after light 7.376860000000001 7.02503 7.72869 4 h after light 5.705595000000001 5.35132 6.05987 8 h after light 13.181750000000001 12.606 13.7575 4 h after dark 10.171785 8.79747 11.5461 8 h after dark 8.837845 8.56505 9.11064 12 h after dark 6.310105 6.03432 6.58589