Continuum level determination of a full datacube. The different panels show from top to bottom: (i) Synthetic continuum map created with Xclass. Each pixel of the map contains a crowded-line spectrum with both emission and absorption lines. The black cross marks the position for which the spectrum is shown in Fig. 11; (ii) Continuum map determined by using the c-SCM (see Sects. 2.1 and 2.4); (iii) Uncertainty of the continuum level determination obtained with the c-SCM; (iv) Ratio of the synthetic continuum map over the continuum image produced with the c-SCM.