About: http://webisa.webdatacommons.org/216460785

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	Changes in the difference quantity can be readily detected over a trend period whose length is selected e.g. so that it covers three working shifts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com