condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.015372833333333334 0.0 0.0461185 9 h after dark 0.0 0.0 0.0 12 h after dark 0.021356566666666663 0.0 0.0640697