The files in this folder are IGOR (.pxp) and Origin (.opj) files containing the graphs and raw data of the figures in the paper at https://doi.org/10.1039/C9CP06082K IGOR can be downloaded for free as a Limited Functionality Demo allowing copying of the raw data. The Origin Viewer is a freely distributed, standalone application that allows viewing and copying of information contained in Origin project files and Origin window files, on computers that do not have Origin installed. If there are any issues with this please contact one of the corresponding authors and we can supply the data in another format.