certainty

The following table describes the values for the alert <certainty> enumeration in <info> entities:

Value	Description
Observed	The Observed value indicates that an event either occurred or is ongoing.
Likely	The Likely value indicates that an event is likely to occur, with an approximate probability of greater than 50%.
Possible	The Possible value indicates that an event is possible but not likely, with an approximate probability of less than or equal to 50%.
Unlikely	The Unlikely value indicates that an event is not expected to occur, with an approximate probability of 0%.
Unknown	The Unknown value indicates that the certainty of an event is unknown.