condition mean min max 0 h after light 5.660915 4.60665 6.71518 4 h after light 6.6272 6.18901 7.06539 8 h after light 6.5157050000000005 6.31555 6.71586 4 h after dark 8.47757 7.52709 9.42805 8 h after dark 8.735605 8.55457 8.91664 12 h after dark 5.910550000000001 5.83145 5.98965