After reading the legend, I think there are some regional differences that just aren't captured. The notation is extremely specific to certain sounds.

Looking at this, one would expect that a western Canadian wouldn't be able to know if someone was from Toronto or not.

This is obviously wrong because they pronounce "Hello" as "I'm from Toronto" and that is an immediate clue that they're from Eastern Canada. (JK jk)

But seriously, Torontonians hit the "ars" (it's not far to take the car to the bar) to a western ear like a fucking pirate. Yar Har Har.

It's obviously more prounced and comes with much more colourful additional pronunciations as you get into the Atlantic provinces, but the pirate ars are still solidly in Toronto.

I don't see in the legend a "pirate ar" notation.