This INTEGER is the lowest temperature, in degrees Celsius, that the Chassis Management Controller (CMC) sensor recorded during the statistics-collection interval represented by this archived sample. Because the CMC chip's own firmware can throttle or reset itself if it overheats, which would take chassis management connectivity down even while the SIOC's actual data path keeps running fine, an admin diagnosing a SIOC cooling problem checks this specific zone rather than relying only on the SIOC's single roll-up thermal status flag. A min sitting close to the average, such as 42, suggests stable conditions for this zone, whereas a min far below the average is worth cross-checking against the suspect flag for a possible sensor glitch.