This read-only object reports which bit position within the P2mpSnapshotAttribute bitmask corresponds to the third attribute value captured in this snapshot, continuing the same indexing scheme as the first two attribute-ID objects. It allows a snapshot to track up to several radio-signal attributes simultaneously while still letting a management tool identify each one distinctly. For example, a snapshot configured to monitor three separate RF metrics at once would use p2mpSnapAttr3Id to identify the third of those metrics in the captured data.