Typically you put your independent variable on the X axis and the dependent on the Y. It now looks as if the more urgently you need to go, the closer people get to toilets (which, while not linear, will probably also be correct)
An interesting non-Islay peated whisky I’ve found is an Irish one: Connemara.
I don’t recall the age of the one I bought (it was years ago) so you might want to look into which ones would be good now.