condition mean min max 4 h after light 4.40125 1.95521 6.84729 8 h after light 1.914415 1.87199 1.95684 12 h after light 1.3064195 0.905749 1.70709 4 h after dark 2.20492 2.08891 2.32093 8 h after dark 2.01007 1.97637 2.04377 12 h after dark 1.6864599999999998 1.47226 1.90066