condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.019877333333333334 0.0 0.119264 10 h after light 0.020356166666666665 0.0 0.122137 14 h after light 0.0245575 0.0 0.147345 18 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0