condition mean min max 0 h after light 1.0454825 0.895215 1.19575 4 h after light 13.44125 12.4662 14.4163 8 h after light 8.862745 6.79019 10.9353 4 h after dark 1.0286465 0.586143 1.47115 8 h after dark 1.18052 1.17557 1.18547 12 h after dark 2.503825 2.38403 2.62362