condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.033399 0.0 0.100197 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 0.0 0.0 0.0 9 h after dark 0.05048333333333333 0.0 0.15145 12 h after dark 0.0580105 0.0 0.116021