As stated in the description, this is the cleared time of the bin -- the timestamp of the last reset of this row's counters. Since a Stats row like this one has no Duration or State field of its own, this ClearTime is the only way to tell how long the totals sitting next to it in the same row have actually been accumulating. For example, a ClearTime of '2024-02-01,00:00:00.0' sitting well before the current time, with steadily climbing counters in the same row, tells you those totals reflect a long, uninterrupted accumulation rather than a recent reset.