condition mean min max 4 h after light 10.040255 8.65391 11.4266 8 h after light 8.45077 7.86696 9.03458 12 h after light 8.093975 7.40648 8.78147 4 h after dark 8.09875 7.07329 8.63654 8 h after dark 9.004166666666666 8.12745 10.1055 12 h after dark 7.691566666666667 6.86635 8.48395