Robert Laird wrote:
I just sent it to  you!  :-)
 
 
Robert, thank you.   And I misspoke above, as I just found the other logs you sent me earlier, which I had forgotten about.  
The "high flying alien" issue is now Fixed for version 11.1.   Occasionally these aircraft are publishing a constant altitude of "Max Value - 1", which appears invalid.   According to the ADSB spec only "Max Value" is supposed to be invalid, and makes no mention of "Max Value - 1".   Since 102,350 MSL appears to be a very unlikely altitude, we're going to treat this instead as "Altitude Unknown".