condition mean min max 4 h after light 9894.140024 9743.897788 10044.38226 8 h after light 10051.503918999999 9933.621938 10169.3859 12 h after light 9006.1082385 7822.232057 10189.98442 4 h after dark 5955.8753209999995 4518.80299 7392.947652 8 h after dark 5375.006784499999 4676.028208 6073.985361 12 h after dark 9002.078211 9002.078211 9002.078211