Hi @theamericanbrit, I think your AHI numbers are great. When I had an overnight sleep study at Mayo Clinic, I had over 55 events (AHI) and was diagnosed with severe obstructive sleep apnea. My sleep medicine doctor prescribed a CPAP and gave me a target to try and keep my AHI under 4. I still have some days over 4 but I keep working on it. I do notice that when my AHI is under 4 I seem to feel more rested when I wake up. Here's some information that may help you understand it a little better.

"How many AHI events per hour is normal?
Apneas are periods when a person stops breathing and hypopneas are instances where airflow is blocked, causing shallow breathing. Normal AHI is less than 5 events per hour, while severe AHI is more than 30 events per hour."
--- Understanding the Apnea-Hypopnea Index (AHI): https://www.sleepfoundation.org/sleep-apnea/ahi