condition mean min max 2 h after light 5.971423333333333 5.64762 6.17507 6 h after light 6.538716666666667 6.03785 6.80168 10 h after light 7.1645 7.11679 7.23363 2 h after dark 7.643573333333333 7.26559 8.20555 6 h after dark 9.42664 9.06748 10.0173 10 h after dark 11.1118 10.5235 11.492