What metric table field contains the time (duration) an incident is open?

The correct metric table field that contains the time (duration) an incident is open is the Duration field. This field specifically measures the length of time from when an incident is created until it is resolved or closed. It is crucial for analyzing the efficiency of the incident management process and helps organizations understand the time spent on incidents, which can inform future improvements.

The other field options do not provide the necessary information about the time an incident is open. The Value field typically holds numerical values related to other metrics, while the Timestamp field records the date and time an incident was created or an event occurred, but it does not calculate the duration. The Status field contains the current state of the incident (e.g., open, closed, in progress) but does not provide information on the duration of time the incident has been active. This makes the Duration field instrumental for performance measurement in incident management.