The Canada Air pilot cold temp' corrections call for a addittion in height at the 200'MDA of about 30-40'at a temp of-30*..Naturally there is no difference to the DH whIch is predicated on the RAD ALT..
As said before I think the introduction of the Alt Setting is a bit o'a red herring.Use the wizz wheel to fine your 'true'Alt minus the Airport alt..
'addition'that is
10k @-20=9400-2500=6900 AGL ?????
