Downlink Frame Time - Total Downlink Frame Time Used

Is there an OID for the total downlink frame time used? I would like to trigger an alarm via SNMP if an access point passed 85%

We use these OID's to track epmp frame utilization... Note! The uplink "ulWLan" ones don't work correctly yet as Cambium has not figured out how to track this accurately on the ePMP hardware yet. They will aways read at 100%.

 "" : "ulWLanTotalAvailableFrameTimePerSecond",
 "" : "dlWLanTotalAvailableFrameTimePerSecond",
 "" : "ulWLanTotalUsedFrameTimePerSecond",
 "" : "dlWLanTotalUsedFrameTimePerSecond",

We have been Monitoring due to seeing THIS post.