linear_quantlim         Calculation of the LOB and LOD with a linear
                        fit
nonlinear_quantlim      Calculation of the LOB and LOD with a nonlinear
                        fit
plot_quantlim           Plot results of nonlinear_quantlim() and
                        linear_quantlim()
raw_data                Example of dataset that contains spike in data
                        for 43 distinct peptides.
spikeindata             Example of normalized datasets from raw_data,
