condition mean min max 4 h after light 13.12105 12.7367 13.5054 8 h after light 9.19965 8.94843 9.45087 12 h after light 7.55391 7.27879 7.82903 4 h after dark 4.293895 3.48142 5.10637 8 h after dark 3.1715 3.13911 3.20389 12 h after dark 8.200199999999999 7.60844 8.79196