This read-only object is the index (1-4) for the demodulator to which a row of stored-statistics configuration applies. This lets the statistics logging interval be configured independently per demodulator, so an admin could, for example, log statistics more frequently on a chronically marginal link while leaving a stable link on a longer, less resource-intensive interval. Before changing the sample interval for just one problematic demodulator, an admin needs to confirm they're addressing the table row keyed by this index matching that specific demodulator.