If it's okay, I'll jump in and respond to that question.
The majority of the incoming travellers arriving from international destinations to Canada arrive in Vancouver or Toronto. I believe that over 50% of travellers arrive at those two airports. Similarly, at the land border, the majority of travellers coming into the country are coming in via Ontario. It obviously leads to a greater portion of individuals that would have to be looked at from an enforcement and compliance perspective.
With respect to Quebec, you noted that there is a variance with respect to the ticketing. For tickets issued in Quebec, they actually have to go through a two-stage process. There's a report written and provided to the public prosecutor in the province of Quebec, who assesses the case and the evidence as provided by a PHAC officer and determines whether or not to go forward with the ticket.
I'll also point out with respect to P.E.I., Nova Scotia and Newfoundland, as well as the territories and Nunavut, that there is no land border, and none of the airports that were operating in those jurisdictions were actually accepting international flights. Therefore, there was no enforcement undertaken.