The data were collected via a number of organisations, with Natural Resources Wales of course being one of them, so that we’re able to understand what the particulate levels are in some parts of Wales—not just the PM10s but the PM2.5s. We know that if traffic is idling, then that creates worse air quality—Brynglas tunnels is an example of that. We know that Swansea has challenges in the sense that its rail network disappeared pretty much in the 1960s and was never as integrated as that of Cardiff. Nevertheless, there are plans going forward now for a Swansea bay metro, which will do much in terms of enabling people to get out of their cars and therefore improve air quality.