condition mean min max 0 h after light 173.756 170.542 176.97 4 h after light 95.04230000000001 90.9745 99.1101 8 h after light 42.26795 37.3232 47.2127 4 h after dark 39.1312 28.8708 49.3916 8 h after dark 135.4865 126.498 144.475 12 h after dark 171.8235 153.364 190.283