condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.019671033333333334 0.0 0.0590131 9 h after light 0.020024233333333332 0.0 0.0600727 12 h after light 0.0 0.0 0.0 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 0.0 0.0 0.0