condition mean min max 0 h after light 3.131925 3.12913 3.13472 4 h after light 4.67933 3.18835 6.17031 8 h after light 1.5479 0.0 3.0958 4 h after dark 1.536605 0.0 3.07321 8 h after dark 4.635695 3.10778 6.16361 12 h after dark 10.835145 9.17059 12.4997