condition mean min max 0 h after light 7.65014 6.40535 8.89493 2 h after light 12.4174 10.0985 14.7363 4 h after light 11.51425 10.8828 12.1457 8 h after light 23.07345 18.8149 27.332 12 h after light 52.36515 51.8406 52.8897 2 h after dark 20.5637 17.748 23.3794 4 h after dark 13.05585 12.8174 13.2943 8 h after dark 13.3255 12.301 14.35 12 h after dark 9.5857 8.0143 11.1571