GPS fix shows as 3 or 4, but only 3, 5, 6 are valid?

Hi, new here. First-ever R/C anything, maiden yadda yadda. Lots of fun, it didn’t even crash! I’m pretty sure I screwed up my RTK GPS setup, but in the excitement of getting the thing in the air, I forgot to actually check the GPS status during the flight. Figured I could get that out of the log afterward, so here I am. And I’m stumped:

This page about flight review says

GPS fix: this is 3 for a 3D GPS fix, 5 for RTK float and 6 for RTK fixed type

Okay, but this log shows the GPS Fix going between 3 and 4.

4 isn’t a valid fix type, is it? What’s going on here?

Thanks in advance,

4 means GNSS + Dead Reckoning combined. It’s not RTK yet.

Cool, thank you! I submitted a pull request to add that to the docs page linked above.