Same bug seen here also, one of ten telegram are wrong
I debug-print the I2C data coming from the Xadow GPS module, so the error must be in the parsing software in the module
3936332E343035353336
GPS latitude is N:63.405537
5A3031302E333137323733
GPS longitude is E:10.317273
39363332342E33323931
GPS latitude is N:6324.329102
5A30313031392E30333531
GPS longitude is E:1019.035095
So, digging here also 
-Steinar