condition mean min max 0 h after light 49.13165 47.2243 51.039 4 h after light 30.82375 30.2279 31.4196 8 h after light 15.894750000000002 14.4318 17.3577 4 h after dark 19.704250000000002 18.5223 20.8862 8 h after dark 35.394999999999996 33.0897 37.7003 12 h after dark 48.620599999999996 44.147 53.0942