This displays the times the network traffic statistics are reset. By default the probe is reset every day starting from midnight and every sixth hour. None of the statistics entries are removed when the probe is reset, but their counters values are set to 0. Entries with no traffic since the last reset will be removed. When reset, the statistics data is saved. Select the 'Data Log' button in the main window to inspect these data.
You can configure the day and time when the probe is reset and the time between each reset.