May provide basic location information about station geography. (Names, Lat,Lon, Administrative and Meteorological Regions).<br /></p><p><br /></p><p>But not provide data about instrument, equipment, data provenance, discovery metadata, methods used, conditions of observation etc.<br /></p><p><br /></p><p>Some quality data is sometimes provided. But often missing.<br /></p><p><br /></p><p>(suggests non-mandatory or "voidable" model elements)<br /></p>