condition mean min max 4 h after light 1172.0105015 832.03464 1511.986363 8 h after light 1075.0465605 986.595257 1163.497864 12 h after light 1123.99003 983.294823 1264.685237 4 h after dark 1119.0541685 1034.30898 1203.799357 8 h after dark 881.5596065 806.37738 956.741833 12 h after dark 713.446702 713.446702 713.446702