Like the near-end version, this identifies which of the 96 completed 15-minute buckets a row of far-end interval history represents, with 1 being the most recently completed quarter-hour. An admin can walk backward through these interval numbers to line up a specific past 15-minute window on the far-end side with a customer-reported outage time, the same way they would for near-end history, but here specifically for the remote-reported error data. Interval 12 corresponds to roughly the 3-hour-old 15-minute window (12 times 15 minutes back), letting an admin check exactly what the far end was reporting three hours earlier.