condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.133951 0.0 0.267902 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.03806533333333333 0.0 0.114196