Thank you - I was hoping there might be a configuration component that could correct the issue, but it appears the report configuration is fine. I recommend opening a support case to investigate further. Out of curiosity, are you collecting Airwave data via SNMP only, or both SNMP and AMON? If you have the flexibility to do so in your environment, it may be worth toggling between using AMON and not using AMON, each for a couple days at a time. You could see if the issue is present both with and without using AMON, and could be a good data point to provide to TAC.
Also out of curiosity - what version of code on the controller(s)?
Thanks,
JJ