condition mean min max 4 h after light 802.327 768.072 836.582 8 h after light 338.5975 315.16 362.035 12 h after light 230.81349999999998 219.527 242.1 4 h after dark 480.9236666666667 472.023 496.82 8 h after dark 765.514 754.28 786.509 12 h after dark 916.381 900.582 940.932