This field reports cleared time of the bin, exposed here as cienaCesPmBasicTxRxCurrBinClearedTime. On this Ciena CES port's PM data, this DisplayString timestamp marks exactly when this current bin's counters were last reset to zero, which is what lets you distinguish a genuinely low value (bin just cleared) from a genuinely quiet port (bin has been running a while with little traffic); and this is in the currently open bin of that same basic bandwidth-profile-aware PM group — it keeps accumulating until its Duration elapses and it rolls into history, so reading it mid-interval gives you a partial, still-growing count. For example, this field holding a value like '2026-08-06,14:30:00.0' tells you precisely which wall-clock window the rest of this bin's counters cover.