This is the smallest single jumbo-frame delta sample recorded within the interval this historical row represents. It matters on an archived historical sample row of that same receive-counter set, kept purely for trending past intervals rather than showing the current live value because a minimum of 0 alongside a nonzero average and max shows the jumbo-frame traffic paused for at least one sub-interval rather than running continuously. jumboPacketsDeltaMin at 0 in an otherwise busy history row on the endpoint this history row belongs to would be consistent with a backup job that pauses briefly between files.