Back when I was a healthy young Whipper snapper doing my class 1 in Gatwick my initial peak flow was in the mid 900's, then was made do it again and it was in the high 900's then the head nurse was called in because it seemed abnormal and when I had to do it again in front of her I got over a thousand.
I am 6'1 and they looked at me like I had two heads
Is that considered unusual?
What are the norms?