This read-only object reports the maximum value observed across all samples collected in this histogram, again as a fixed-point value that must be interpreted using p2mpHistSumScale and p2mpHistSumPrecision. It gives an admin the worst-case high reading of the tracked parameter for the collection period. For example, when histogramming transmit power, an unexpectedly high p2mpHistMax could indicate a brief power spike worth investigating for compliance or hardware-stress reasons.