I may have discovered a hidden limitation of TGO, although it is a rather remote chance you will encounter it. Luciano, a friend in Brazil, sent me a 24 hr. rinex file from a Brazilian CORS. His problem was that the file would import into TGO just fine if he broke it into smaller time blocks but as a 24 hr file it would appear to be a 7 day file. As it turned out there was a 2 minute period at about 15 hrs 45 mins into the file where there were 16 SV’s per epoch. I deleted one SV and the file imported correctly. Luciano has tried this fix on some other problem files and now they import correctly.
It appears that TGO can only handle 15 SV’s per epoch which usually shouldn’t be a problem. TBC didn’t have a problem importing the full file correctly.