About: http://webisa.webdatacommons.org/273183624

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	The sum of the normalized signals from the upper two elements, subtracted from the sum of the normalized signals from the lower two elements is a measure of the vertical position of the centroid of the irradiance on the four detectors.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com