Average Length of SNGs

[terrellk11]

I'm starting to get back into playing more SNGs and am trying to figure out what my earn rate is and what it can be if I can maintain the ROI approximations mentioned in the FAQ. However, the one piece of information I need to complete those calculations is the average length of SNGs. I've tried finding that information from my PT database but can't seem to find any information on how long each of the tables is lasting.

Does anyone either (1) know how to get this information from PT; or (2) have an approximate average time per table they're spending at either FTP (normal and/or turbo) or Absolute?