This is daft, surely the people sat behind others are a bigger risk than those to the side, it would be better to be sat 2 or 3 seats apart back to front ? I'm constantly showered in spit from behind, even 2 rows behind struggle to prevent that if people are abusing the referee or players.
There seems no plan there at all, some sat directly behind each other, some seats apart, and a group of 7 or 8 (behind and left of number 17), who are all too close.
Might as well fill every seat if that's how its going to work.
There is one seat gap in each direction it is harder to see vertically. At the Emirates/Arsenal (not the 2 other grounds) the seats are so big it would be pretty safe, but at the trafford football ground with seats to small to sit in they would need 2 each way.