condition mean min max 4 h after light 807.6 807.6 807.6 8 h after light 977.1500000000001 954.2 1000.1 12 h after light 1149.25 1119.4 1179.1 4 h after dark 1375.2 1286.4 1464.0 8 h after dark 1167.5 1027.4 1307.6 12 h after dark 1075.1999999999998 1038.3 1112.1