condition mean min max 4 h after light 18.035800000000002 11.5142 24.5574 8 h after light 20.1905 19.551 20.83 12 h after light 29.63675 29.2389 30.0346 4 h after dark 39.3675 32.1601 43.178 8 h after dark 31.3029 27.8184 33.7035 12 h after dark 19.800833333333333 18.6459 20.9337