condition mean min max 4 h after light 279.7573125 179.640667 379.873958 8 h after light 324.652918 253.491814 395.814022 12 h after light 244.359204 234.794044 253.924364 4 h after dark 177.937422 112.38984 243.485004 8 h after dark 158.4300665 150.905453 165.95468 12 h after dark 73.676731 73.676731 73.676731