What do the different pictograms in an alert's details mean?

What do the different pictograms in an alert's details mean?

Pictograms in alert details serve as visual cues to quickly communicate the type of information or the urgency of the alert. Here’s a general guide to understanding common pictograms:
  1. Name of the zones for which the alert is triggered
  2. Number of alerts for that zone
  3. Type of zone: can either be a control zone (as indicated in the figure) or a flight plan zone
  4. Alert Details: information concerning the alert, including the traffic icon, registration (or callsign when applicable), initial detection time and either an "Active" icon, denoting the drone's current presence in the zone, or the last detection time inside of the zone.