condition mean min max 0 h after light 14.71885 14.2426 15.1951 4 h after light 18.02095 17.7999 18.242 8 h after light 14.8515 13.5534 16.1496 4 h after dark 14.5838 14.1109 15.0567 8 h after dark 13.5417 13.1873 13.8961 12 h after dark 11.7319 11.1181 12.3457