I just got tickets and am in Block 16, row M. I know where block 16 is by the seating plan, but rows are not marked. Does anyone know how rows are organized? Whereabout in block 16 will I be (I'm assuming the middle, since m is the middle letter of the alphabet, but don't know for sure.)

http://www.lgarena.co.uk/planningavisit/venue/seatingplans