condition mean min max 2 h after light 0.14263918333333334 0.0 0.290351 6 h after light 0.1843992 0.0423125 0.421958 10 h after light 0.16227528333333333 0.0 0.380714 14 h after light 0.0909309 0.0 0.182776 18 h after light 0.07874668333333333 0.0 0.170051 2 h after dark 0.243573 0.162571 0.350017