In my (probably very poor) guesstimating i would have said 2-4K A&M fans.
But I’m with you, let’s pack that stadium with our fans for the rest of the season
Not a chance there was 15-20% A&M fans. I would guess about half that max
Most were confined in the corner next to the East end zone (not close to full) and sparsely sprinkled throughout the stadium