condition mean min max 4 h after light 45.3874 40.3056 50.4692 8 h after light 42.1196 41.8927 42.3465 12 h after light 48.59765 46.1321 51.0632 4 h after dark 55.47915 52.8212 58.1371 8 h after dark 56.7344 56.3385 57.1303 12 h after dark 53.99615 53.8919 54.1004