cucsSwEnvStatsHistPsuCtrlrInlet1Max holds the maximum INTEGER value that the #1 power-supply controller inlet air temperature sensor recorded during the interval covered by this switch's environmental-history sample. Keeping the maximum alongside the instantaneous reading lets an admin tell a brief blip apart from a sustained thermal problem at that sensor without having to store every raw sample. For instance, a maximum that is far from the current reading for the #1 power-supply controller inlet air temperature would tell an admin that conditions swung significantly during that history interval, even if the switch looks fine right now.