<http://webisa.webdatacommons.org/prov/35241845>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/40179817> .
<http://webisa.webdatacommons.org/40179817>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<arvojournals.org> .
<http://webisa.webdatacommons.org/40179817>	<http://www.w3.org/ns/prov#value>	"However, while there is a general trend toward improvement, observers' estimation precision is significantly lower than the maximum ideal precision of 4.2." .
<http://webisa.webdatacommons.org/40179817>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .