condition mean min max 4 h after light 9.714689 8.322675 11.106703 8 h after light 10.461265000000001 9.539395 11.383135 12 h after light 11.487147 10.996977 11.977317 4 h after dark 11.347356000000001 10.70945 11.985262 8 h after dark 11.051413 10.342008 11.760818 12 h after dark 11.032973 11.032973 11.032973