Particle chemical speciation and Positive Matrix Factorisation (PMF) factor concentration dataset for the Lower Hunter Particle Characterisation Study. Note: This workbook contains the chemical speciation data for each sample collected during study (worksheets K and L) and the PMF factor concentration data for each day (worksheets E and F), which together comprise the primary dataset from the Lower Hunter Particle Characterisation Study. This workbook also includes summary data for PMF factor concentrations, including annual averages (worksheets A, B, F and G) and monthly averages (worksheets C, D, H and I). Due to data rounding, there maybe some differences between the summary data reported in this workbook and the summary data presented in the main report.