condition mean min max 4 h after light 5.701513333333334 5.62911 5.7378800000000005 8 h after light 5.729033333333334 5.6894 5.79439 12 h after light 5.580893333333333 5.519819999999999 5.66397 4 h after dark 5.57774 5.42689 5.6645900000000005 8 h after dark 5.68172 5.54925 5.799580000000001 12 h after dark 5.598486666666666 5.40801 5.77379