condition mean min max 4 h after light 5.885395 5.61158 6.15921 8 h after light 4.5780650000000005 4.41863 4.7375 12 h after light 4.63272 4.39964 4.8658 4 h after dark 8.421483333333333 7.33264 9.20047 8 h after dark 10.191843333333333 8.30853 12.007 12 h after dark 8.46847 7.06793 9.26388