Environment Canada ran an air quality model, and so the input to that model was the emissions reductions. The air quality model predicts ambient air quality conditions across the country on gridded squares. Our model takes the information from those geographic areas and applies it in terms of personal exposure, individual exposure, according to the population and distribution across the country and to the health risks. So it's fairly straightforward to simply identify all of the areas that are contained within the boundaries of Quebec.
The only differential there would be that there are a couple of boxes on the borders, so I believe Gatineau was counted in Ontario, but it's a relatively minor issue. But the actual calculations are based on the exposure of people living in Quebec to air pollutants and the difference that the regulatory reductions would make in the air pollution concentrations, specifically the pollutant particles and ozone.