condition mean min max 0 h after light 4.96505 4.54786 5.38224 2 h after light 5.801375 5.47787 6.12488 4 h after light 8.619155 8.11879 9.11952 8 h after light 20.5488 18.9425 22.1551 12 h after light 18.7176 18.6639 18.7713 2 h after dark 12.7721 11.3176 14.2266 4 h after dark 7.9576400000000005 7.78101 8.13427 8 h after dark 7.838375000000001 7.54647 8.13028 12 h after dark 4.997295 4.94709 5.0475