cucsSwEnvStatsHistDonner holds, as a SnmpAdminString text value, the current reading captured for the switch's Donner-labeled sensor channel in this switch's environmental-history sample. Because UCS Manager tracks this reading by the chip/channel's internal codename (Donner), an admin monitoring the switching-ASIC's health looks at this specific column rather than a generic temperature OID. For example, a sudden change in the Donner reading between consecutive history rows would point an admin at that particular onboard component rather than the chassis fans or PSUs.