About: http://webisa.webdatacommons.org/36370614

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	I think it is because it is traditional to centre a moving average on a mid-point, especially if the average is ???filtered???, i.e. given different weightings depending on the distance from the mid-point.
http://www.w3.org/ns/prov#wasQuotedFrom	drroyspencer.com