About: http://webisa.webdatacommons.org/120955299

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	It???s not that they were incapable of taking measurements (although some of the techniques have flaws) it???s how representative the samples are of the atmospheric value, taking readings in the vicinity of a source or sink is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com