Having difficulty on trying to get a WSI 6' dish up, so I may view some C band channels. Not too certain on how to go about getting the proper declination angle needed. My Latitude angle is set at 31 degrees, looking at a Declination Angle Chart from the internet it shows the required Declination Angle degrees should be set at 5.10 degrees. Where does this 5.10 degrees come from and is this degrees added or subtracted from the Latitude angle.

Thanking you in advance for your help.