condition mean min max 4 h after light 4.99122 4.1494 5.83304 8 h after light 1.221825 1.10354 1.34011 12 h after light 1.48661 1.14007 1.83315 4 h after dark 1.284705 1.25987 1.30954 8 h after dark 2.718785 2.69958 2.73799 12 h after dark 4.42553 3.96387 4.88719