condition mean min max 0 h after light 17.22035 15.1239 19.3168 2 h after light 6.021435 5.13586 6.90701 4 h after light 6.005915 5.73008 6.28175 8 h after light 4.356975 2.91202 5.80193 12 h after light 4.58193 3.60435 5.55951 2 h after dark 8.43424 6.31238 10.5561 4 h after dark 9.81827 8.13034 11.5062 8 h after dark 16.80055 14.416 19.1851 12 h after dark 21.703 20.2484 23.1576