condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.1620065 0.152461 0.171552 4 h after dark 0.0 0.0 0.0 8 h after dark 0.26333433333333334 0.0 0.50271 12 h after dark 0.0 0.0 0.0