According to Standard 62-1989: Ventilation for Acceptable Indoor Quality of the American Society for Heating, Refrigeration, Air Conditioning Engineers, adequate supply of outdoor air should be about 20 cubic feet per minute per occupant.

Question

According to Standard 62-1989: Ventilation for Acceptable Indoor Quality of the American Society for Heating, Refrigeration, Air Conditioning Engineers, adequate supply of outdoor air should be about 20 cubic feet per minute per occupant.

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How do you read "Standard 62-1989"?
1. Standard sixty-two dash nineteen eighty-nine
2. Standard sixty-two hyphen nineteen eighty-nine
3. Standard sixty-two nineteen eighty-nine

Answer 1

According to Standard 62-1989: Ventilation for Acceptable Indoor Quality of the American Society for Heating, Refrigeration, Air Conditioning Engineers, adequate supply of outdoor air should be about 20 cubic feet per minute per occupant.

Both #1 and #3 are considered correct, but the pronunciation would need to be consistent throughout, not wavering back and forth between the two.