condition mean min max 4 h after light 6.538546666666667 3.15816 8.45823 8 h after light 4.197626666666666 1.00911 6.81716 12 h after light 4.5829699999999995 2.49722 6.88697 4 h after dark 6.04476 3.79053 7.28057 8 h after dark 4.922306666666667 2.50217 6.61156 12 h after dark 9.00741 7.87994 9.92733