About: http://webisa.webdatacommons.org/437751376

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 angle relative to the horizontal, and c2 is a constant determined by the geometry of your canopy.
http://www.w3.org/ns/prov#wasQuotedFrom	askthephysicist.com