Didn't know there was a chart. I sent the RPRF and an upfront med exam with my application.
I'm from Washington state but have been staying in Canada for over two years by continuously extending my visitor visa, and leaving the country occasionally. The longest I've been out of the country was two weeks.
I received a fair amount of border "trouble" whenever I left and reentered the country (three times), with some officers accusing me of abusing my visitor status. However, they always let me through anyway.
Sent: April 28, 2014
Received: May 12, 2014
Sponsor Approved / In Process: July 15, 2014
Decision Made: ~August 15, 2014
COPR Received: August 18, 2014