These are statements aggregated by a matching query plan. All metrics refers to the statements of this type executed in the time range.
Count: All statement executions collected by the agent during the time range
Count %: Percentage of this statement type / all statements executed in the time range
Errors: Number of statement executions resulting in an error. An error generated during a statement execution for any reason related to the statement, so probably not a session timeout
Error%: Percentage of statement executions resulting in an error / total statement executions of this query
Avg Row Counts: Average number of rows Examined / Sent / Affected by each execution of this query
