condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.190935 0.0 0.572805 9 h after light 0.0 0.0 0.0 12 h after light 0.13137225 0.0 0.525489 3 h after dark 0.0 0.0 0.0 6 h after dark 0.310854 0.0 0.932562 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0