Cumulative Frequency Plot (IMAGE) Geological Society of America Caption Cumulative frequency plot of the particulate matter length for deployers and controls. Credit Heather Lowers Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.