Sure.
I'll try to get the numbers off the top of my head, but eastern Canada imports about 500,000 barrels per day. I think that about 80% of that is from the U.S., with the rest from other countries. In and around 700,000 barrels per day transit the U.S. into southern Ontario and go into Montreal. Eventually, some of that gets into Lévis.
I would say that most of the region is supplied by Canadian crude. My understanding is that the biggest rationale for eastern Canadian refiners' bringing in crude is that it has to come in by ship at this point, so there are some infrastructure constraints.