What is it about these companies and these isa temp questions. Guess work and rules of thumb will get you in the dock faster than you can say " fair cop officer".
Above tl thats why we are all on std setting 1013.2 etc. Below transition , and not under radar there are specific tables or similar in your part a or similar. Thats what the questions should focus on.
There is no room for rules of thumb in this litiguous society. What next personalised qrhs based on titbits from your atpl books....I despair