Example of a SED-fitting plotted over the SDSS spectra. Red asterisks show the original input (note the risen r’ dot). Green dots denote the photometric points after r’ decontamination. These points overlap the red ones except for the r′, because the r’ correction does not take them into account. Magenta solid line indicates the Hα continuum using the 2F method. Cyan solid line shows the Hα continuum using the 3F method. Dashed blue line denotes the best-fitting template if no r′ decontamination is done. Black solid line is the best-fitting template after r’ decontamination.