condition mean min max 0 h after light 48.4896 44.7578 52.2214 2 h after light 5.02717 4.53557 5.51877 4 h after light 4.206795 3.55041 4.86318 8 h after light 6.733735 6.65427 6.8132 12 h after light 8.956425 8.31494 9.59791 2 h after dark 10.721945 9.99079 11.4531 4 h after dark 12.92145 12.6816 13.1613 8 h after dark 23.1323 19.784 26.4806 12 h after dark 41.0199 40.8724 41.1674