These paylines are for applications reviewed for the September 2015, January 2016, and June 2016 Council meetings. For TropMed researchers, the most relevant are R01, R03, and R21.
For an explanation of Paylines and Percentiles, please see:
http://www.niaid.nih.gov/researchfunding/grant/strategy/pages/7payline.aspx
http://www.niaid.nih.gov/researchfunding/grant/strategy/pages/7payline.aspx