Column_Name Unit Definition Data_Type SampleID NA Identifier of the measured leaf string CNratio NA Carbon:nitrogen ratio floating point Cmass mg g-1 Carbon content of leaf per dry mass floating point Nmass mg g-1 Nitrogen content of leaf per dry mass floating point Carea g m-2 Carbon content of leaf per unit leaf area floating point Narea g m-2 Nitrogen content of leaf per unit area floating point