condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0195337 0.0 0.0586011 9 h after light 0.0147505 0.0 0.0442515 12 h after light 0.021518933333333334 0.0 0.0645568 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