As discussed in today's Tuning Seminar, we have a reliable resource for weather data in Toronto to apply proper SAE correction to Vitual Dyno plots:
Toronto's past 24 hrs readings (this is a consolidated page with all data)
LINK: Toronto Island Weather over the Last 24 Hours
Barometric Pressure Converter [from Kpa to in/Hg]
LINK: Barometric Pressure Converter
Temperature Converter [C* to F*]
LINK: Temperature Converter