Herschel PACS maps of the systems sampled in this work together with their respective SEDs. The 70 and 160 μm emissions are shown in color scale and contours, respectively. Each stamp spans a region of 80′′ × 80′′ and is centered on the position of the OTF maps, except for NGC 1333 IRAS 5 whose sources have a separation of 45.7′′. Red symbols represent the sources of a system and the positions of the APEX single-pointing observations. Circles denote systems with additional unresolved multiplicity. Diamonds indicate single sources within multiple protostellar systems. Crosses indicate single protostars. The SEDs are overlaid on the average SEDs from Enoch et al. (2009) for reference (dashed lines), with early Class 0 (red), late Class 0, early Class I, late Class I, and Class II (gray).