condition mean min max 0 h after light 1.7393299999999998 1.70366 1.775 4 h after light 3.170865 2.70739 3.63434 8 h after light 2.37684 2.20082 2.55286 4 h after dark 2.58829 1.66721 3.50937 8 h after dark 2.203765 1.75465 2.65288 12 h after dark 2.5624700000000002 2.33684 2.7881