This Gauge32 reports the count of multi-bit ECC errors for this memory unit accumulated during the current 1-hour rolling window, per its eccMultibitErrors1Hour property description. An admin uses this specific windowed figure to see whether multi-bit ECC errors are clustering in the recent 1-hour timeframe, such as right after a reboot, rather than only seeing the lifetime total. A value of 2 in this window versus 0 in the prior window would suggest a recent, not historical, onset of multi-bit ECC errors on this module.