A read-only CwrFixedPointValue, in dBm, giving the highest transmit power the subscriber unit reached during the current operational minute, not a cumulative statistic. Watching the peak transmit power reveals whether the unit's automatic power control is pushing toward its ceiling to compensate for a weak or fading link. For example, a subscriber unit whose p2mpSu1MinTxPowerMax is consistently pinned near its maximum rated output likely has little remaining margin to compensate for further signal degradation, such as worsening weather.