I understand your question as to explaining how folk describe their wind-age on a target at a given time.
My take on it, dont listen to them and and take YOUR best shot.
At Dunfermline on a winter round I gave 1 and a half from centre on a target i hit a similar distance from a kill i hit just before it - it took half. The fellah i was shooting with gave it 2 and was lucky to hit the plate when it took nearer 3.
Winds a ***** - best bit of advice i heard on this thread is try to wait until it drops a bit, so you dont have to give it a stupid amount