condition mean min max 4 h after light 11.55501 9.88052 13.2295 8 h after light 9.798575 9.57015 10.027 12 h after light 9.782530000000001 9.14886 10.4162 4 h after dark 15.23685 14.6027 15.871 8 h after dark 15.650749999999999 15.2903 16.0112 12 h after dark 13.18945 12.9895 13.3894