condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.034386 0.0 0.103158 9 h after light 0.0 0.0 0.0 12 h after light 0.012156525 0.0 0.0486261 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.02325185 0.0 0.0465037