[CQ-Contest] Question on Log Checking

[Roland Guidry]

Just received my log report for the CQWW SSB 2005 Contest. I had several
contacts marked    -N, but next to each was a very high number, for example:
 
  3 -N F6KHM (2037)
19 -N YT7A (1301)
..... and so on.
 
Does the number in parenthesis note the number of logs reporting a contact
with the station? Is the -N because they did not turn in a log, so it could
not be checked?
 
In my case, I had 11 QSO's with the -N. 
 
So I was wondering if I was thinking about it the right way.
 
Roland NA5Q