condition mean min max 4 h after light 2.557625 1.99886 3.11639 8 h after light 1.650715 1.52741 1.77402 12 h after light 4.478235 3.6604 5.29607 4 h after dark 8.557894999999998 8.49119 8.6246 8 h after dark 11.259 10.6027 11.9153 12 h after dark 7.2388200000000005 7.15703 7.32061