condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0209511 0.0 0.0628533 9 h after light 0.0 0.0 0.0 12 h after light 0.0239509 0.0 0.0718527 3 h after dark 0.019364333333333334 0.0 0.058093 6 h after dark 0.018142266666666667 0.0 0.0544268 9 h after dark 0.031081333333333332 0.0 0.093244 12 h after dark 0.0 0.0 0.0