condition mean min max 4 h after light 1.72642 1.09281 2.36003 8 h after light 2.388985 1.87796 2.90001 12 h after light 2.2200349999999998 1.9102 2.52987 4 h after dark 2.58466 2.27771 2.89161 8 h after dark 2.3918850000000003 2.11393 2.66984 12 h after dark 1.998775 1.51052 2.48703