Comparison between the 2009 data (top graph) and, with an offset, the original single observation run data of 2002 (9 frames, bottom) as used by Ivanchik et al. (2005), King et al. (2008), Thompson et al. (2009), and Wendt & Molaro (2011). The vertical lines indicate the positions of the H2component (solid) and the 12 additional lines fitted in King et al. (2008). In green the single line fits (L4R1 and L4P1) with their corresponding local continuum polynomial fit from this work. Note, that the fits for the analysis were not carried out on the rebinned and coadded data as shown in this figure.