The PDR solution maps obtained for the far UV interstellar radiation field in units of G₀. Left to right are the results obtained correcting the [CII] flux from the ionized contribution obtained by considering the densities of the ionized gas equal to 300 (left) and 15 cm^-3 (middle) and with no correction (right). The top row shows the results obtained using as input [OI] 63, [CII] and FIR; the bottom row shows the results obtained using as input [OI] 145, [CII] and FIR (see Sect. 4.3.1 for details). (This figure is available in color in the electronic form.)