condition mean min max 4 h after light 77.8267 74.2758 81.3776 8 h after light 55.32285 54.2214 56.4243 12 h after light 35.337999999999994 34.1641 36.5119 4 h after dark 26.7168 26.7038 26.7298 8 h after dark 37.2995 35.5249 39.0741 12 h after dark 57.35765 52.9401 61.7752