A read-only CwrFixedPointValue, in dBm, giving the average transmit power the subscriber unit used across the current operational hour, not a cumulative statistic. This single hourly average is the natural figure to trend over days or weeks to spot a slow drift in how hard the unit's power control is having to work. For example, a steadily rising p2mpSu1HrTxPowerAvg across successive days, even without any single alarming spike, could indicate gradual antenna or cable degradation worth investigating before it becomes severe.