condition mean min max 0 h after light 15.6096 14.1538 17.0654 2 h after light 43.0244 40.2398 45.809 4 h after light 22.933799999999998 22.3265 23.5411 8 h after light 22.9981 18.7099 27.2863 12 h after light 30.2562 28.9323 31.5801 2 h after dark 7.07226 6.97082 7.1737 4 h after dark 8.371865 7.53433 9.2094 8 h after dark 8.66696 8.12494 9.20898 12 h after dark 10.75405 10.5992 10.9089