condition mean min max 4 h after light 1720.5702575 1346.837384 2094.303131 8 h after light 1850.63599 1738.30898 1962.963 12 h after light 2229.915373 1882.384169 2577.446577 4 h after dark 3042.590682 2202.949307 3882.232057 8 h after dark 3721.794854 2947.013398 4496.57631 12 h after dark 2183.906767 2183.906767 2183.906767