condition mean min max 4 h after light 412.465452 359.237309 465.693595 8 h after light 571.181388 321.343816 821.01896 12 h after light 1100.453424 1059.673618 1141.23323 4 h after dark 1346.0885735 673.869663 2018.307484 8 h after dark 1941.007154 802.821071 3079.193237 12 h after dark 942.802713 942.802713 942.802713