Data may come from different sources - need to know that 'this temperature value' came from a certain automatic process, or from a manual observation or keyed in post-fact.<br /></p><p><br /></p><p>Needs to be captured on a value by value basis.<br /></p><p><br /></p><p>(TimeseriesML PointMetadata?)<br /></p><p><br /></p><p>"Data Source"<br /></p>