condition mean min max 4 h after light 1.5783 1.50453 1.65207 8 h after light 1.7211 1.64531 1.79689 12 h after light 2.75618 2.1981 3.31426 4 h after dark 5.637475 4.1797 7.09525 8 h after dark 2.8069800000000003 2.68756 2.9264 12 h after dark 2.200965 2.02788 2.37405