condition mean min max 4 h after light 9.944342666666666 9.238342999999999 11.02566 8 h after light 98.17429 66.26357 117.51 12 h after light 2178.918 1863.114 2652.677 16 h after light 967.6949333333333 887.2025 1047.017 4 h after dark 185.14003333333332 177.6479 189.4564 8 h after dark 27.910036666666667 24.23228 31.879959999999997