A link to the gml:id of the SampleProduced object contained in the associatedsampling activity. That object holds the location and the specific sampling time ofthe associated sample.
<element name="sampleProducedRef" type="gml:ReferenceType"><annotation><documentation>A link to the gml:id of the SampleProduced object contained in the associated sampling activity. That object holds the location and the specific sampling time of the associated sample.</documentation></annotation></element>