condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.02955503333333333 0.0 0.0886651 9 h after light 0.0 0.0 0.0 12 h after light 0.039575925 0.0 0.0833604 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