At the first fret:
E = .022", A = .020", D = .018", G = .018", B = .018", E = .016"
At the 12th fret:
E = .105, A = .100, D = .095, G = .090, B = .085, E = .080
PS: My 12-string is about the same, but maybe even a smidge lower at the 12th fret (a smidge too low, IMO). Will replace the saddle and reset the action higher someday.
PS, part deux: I set my guitars up to these specs based on info from Bryan Kimsey's website. Bryan is a highly-regarded setup/ repair guy who frequents the Martin Forum.
http://www.bryankimsey.com/