The files 'NPoM_SERS', 'SPARK150nm' and 'SPARK780nm' contain the SERS intensity in counts/mW/s, respectively for the NPoM geometry and the SPARK geometries of 150nm and 780nm nanolenses. These should be plotted against the wavenumber (in cm^-1) as contained in the file 'X-axis_wavenumbers_cm-1'.