 to the time the report was created, this date pertains to the data in the report. The value is a timestamp in RFC3339 UTC "Zulu" format, accurate to microseconds. Example: <code>"2015-10-02T15:01:23.045678Z"</code>.</p></dd>
<dt>start_time_before</dt>
<dd><p>This parameter indicates that the API response should only contain reports if the earliest data in the report is before the specified date. Whereas the createdAfter parameter value pertains to the time the report was created, this date pertains to the 