About the Authors

David G. Zawada

dzawada@usgs.gov

Affiliation United States Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida, United States of America

Charles H. Mazel

Affiliation Physical Sciences Incorporated, Andover, Massachusetts, United States of America

Competing Interests

Dr. Mazel is employed by Physical Sciences Inc., but this status does not alter the authors' adherence to all of the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: DGZ CHM. Performed the experiments: DGZ CHM. Analyzed the data: DGZ CHM. Contributed reagents/materials/analysis tools: DGZ CHM. Wrote the paper: DGZ CHM.