Total of E-M81 in Galicia (NW Spain), considering many studies :
Galicia n=2/19 10.5% Flores et al.2004
Galicia n=9/88 10.2% Adams et al.
Galicia n=12/292 4.1% Brion et al.2004
Total Galicia 23/399= 5.76%
It's actually below 6% when combining different studies, and similar to those found in some areas of France, like Auvergne ( 5.62%, Cruciani 2004), and higher than those found in Andalusia (4.7% , see here). This presence is obviously due to pre-historic migration, because muslim history in Iberia doesn't correlate with genetics, as seen here, when Andalusia has less E-M81 than some northern spanish communities.