condition mean min max 3 h after light 0.860669 0.590515 1.10315 6 h after light 0.921854 0.68018 1.18194 9 h after light 1.28909 1.05879 1.54366 12 h after light 2.0212775 1.15885 2.60532 3 h after dark 2.1575533333333334 1.7137 2.99006 6 h after dark 1.5899333333333334 1.00289 2.61024 9 h after dark 1.21055 1.1579 1.25891 12 h after dark 0.6847225 0.602184 0.767261