Example of a typical CALIFA spectrum analysed with the described method. In particular, this is the spectrum of IC 1199 at 24 arcsecs (1.34 h_in). The solid black line represents the observed, rest-framed spectrum. The solid red line is the STECKMAP best fit to the observed spectrum after removing the gaseous emission lines with GANDALF. The inset is focused on the Hβ-Mg I (4800–5250 Å). See text for further details.