condition mean min max 4 h after light 9.43449 6.47918 12.3898 8 h after light 4.34159 4.28659 4.39659 12 h after light 5.1184899999999995 4.57096 5.66602 4 h after dark 6.634535 6.43421 6.83486 8 h after dark 9.949200000000001 9.7246 10.1738 12 h after dark 11.697199999999999 11.3163 12.0781