condition mean min max 3 h after light 6.97463 5.98588 7.63807 6 h after light 6.803883333333333 5.96086 7.81291 9 h after light 5.129346666666667 4.50471 5.46976 12 h after light 6.806515 5.47557 9.47748 3 h after dark 6.858193333333333 6.29889 7.53653 6 h after dark 6.5124200000000005 6.0521 7.28723 9 h after dark 7.976403333333333 7.51514 8.66817 12 h after dark 7.774875 7.46336 8.08639