condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.02608385 0.0 0.0521677 12 h after light 0.0318566 0.0 0.0637132 4 h after dark 0.0 0.0 0.0 8 h after dark 0.01835342 0.00930234 0.0274045 12 h after dark 0.0 0.0 0.0