condition mean min max 4 h after light 6.258165 5.28409 7.23224 8 h after light 4.38692 4.22141 4.55243 12 h after light 5.3987549999999995 5.03937 5.75814 4 h after dark 7.71329 6.49554 9.19228 8 h after dark 7.961239999999999 7.17348 8.50625 12 h after dark 6.166076666666666 5.91562 6.31254