I have to call bullshit on that. At my former small up down, my facrep and ATM straight up lied about what was needed on our "90th percentile busy day." They say we needed 1 local and 1 radar position all day which is true. Then they said we needed a standalone CIC and Radar Associate for like 8 or 10 hours of the day. Radar Associate was NEVER opened outside of training to get the mins for certification and even that was unnecessary bullshit. And standalone CIC? Why are we calculating staffing based on supervisory duties. If the agency wants a standalone CIC, hire a supe to actually do the job. Anyways, the new numbers came out and the new crwg is 21.
Meanwhile, our neighboring facility that is the same level, same type, and same exact hours was honest on their survey. They said 1 local and 1 radar position all day as well but that's it. Their tower and approach are slightly busier than ours was too. Their new crwg number is 13.
That isn't just a tiny discrepancy. That's one facility saying they need 61% more bodies to work less planes. That's just my one little anecdote of what I know for a fact happened but it makes me believe a lot of these numbers are complete bullshit that could be completely fabricated by whatever the rep and atm wanted to make up.