Dr RON,

What you want to know is what percentage higher than average is the barrier winning for each field size combination.

Also some peoples stats don't take into consideration scratchings which were inside the barrier assigned to the horse and tihs can give misleading stats.

Barriers can be analysed a fair bit and the usual result is the lower the barrier(1-4) the higher the strike rate but the higher the barrier (10+) the higher the ROT.

Mind you the barrier has less effect on longer races and also on races with less runners (less then 12) in regard to strike rate.