condition mean min max 4 h after light 10.579129 10.082239 11.076019 8 h after light 10.3018025 10.035192 10.568413 12 h after light 8.867537500000001 8.250177 9.484898 4 h after dark 8.964406499999999 8.443915 9.484898 8 h after dark 9.6253605 9.525919 9.724802 12 h after dark 8.409072 8.409072 8.409072