ner_tags: O O O O O O O O O B-Organization B-Grant B-Organization B-Grant I-Grant B-Organization B-Grant I-Grant B-Grant I-Grant B-Grant O O O O O O B-Database I-Database I-Database O O O O O B-Organization I-Organization I-Organization
tokens: We acknowledge the partial support of the following grants: NASA NNX14AC08G, NASA/SWRI Subcontract A991132BT, NASA Subaward 37102-2, NNX14AJ53J GCR, NNX15AI65G. This paper uses data from the Heliospheric Shock Database, generated and maintained at the University of Helsinki.