It means exactly what it says, are you pointing a uhf satcom antenna?
The antenna would point up at a 34.6 deg angle off the horizon and a compass heading of 176.1 degrees using a compass corrected for magnetic declination or 172.3 degrees for a compass not adjusted for declination. A UHF satcom antenna has very broad beam and if your within 10 degrees it will be fine.
The LNB skew can be ignored for UHF satcom and is for adjusting the feed on a linear pol C or Ku feed for cross pol rejection
prcguy
so what does:
Elevation: 34.6°
Azimuth (true): 176.1°
Azimuth (magn.): 172.3°
LNB Skew [?]: 4.9°
mean?!