I'm pretty sure the minimum on the biographical inventory, the final number in the scores listed above was a 4. The biographical inventory was all those questions such as " do you speed/ do you like to be in control" etc.
Looking at my scores, there were
1.Academic Qualification Rating
2. a)Pilot flight officer Rating
b) Naval flight officer Aptitude Rating
3. a)Pilot Biographical Inventory
b) Naval Flight officer Biographical Inventory
The mins for pilot and NFO were the same, for pilot they used 1,2a,3a...and NFO was 1,2b,3b. The requirement was a 4 6 4.
I remember it vividly since my pilot scores were pretty good, but I got a 3 on the Naval officer biographical inventory. Seems I have issues relinquishing control
I think I'm one of the few pilots who would not be allowed to transition to NFO if something happened.