About: http://webisa.webdatacommons.org/340295097

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	You may extract and store a proportional sample of exhaust in an appropriate container, such as a bag, and then measure HC, CO, and NO X concentrations in the container after the test interval.
http://www.w3.org/ns/prov#wasQuotedFrom	federalregister.gov