condition mean min max 4 h after light 328.064164 306.525286 349.603042 8 h after light 396.8251795 335.522753 458.127606 12 h after light 452.203128 289.712661 614.693595 4 h after dark 173.1492475 157.232057 189.066438 8 h after dark 104.18069799999999 67.547371 140.814025 12 h after dark 716.146998 716.146998 716.146998