Ports have a unique way of describing themselves. Sometimes they'll describe their size in terms of total tonnes of goods shipped. Sometimes they like to refer to the number of containers. Then they'll refer to other volume measures. So, the answer is that it depends. I'm sorry that isn't a clear answer.
In terms of the 17 CPAs, they're all very different, as you know. The old expression is that if you've seen one port, you've seen one port. However, there are certainly many small ones within the system and a few larger ones. You could probably draw your own conclusions as to which ones would probably struggle under the new reporting requirements.