Results from the LTE-analysis. Plotted are a) the relative column densities of ¹³CO against radius b) and against the hydrogen column density, c) the relative column densities of C¹⁸O against radius d) and against the hydrogen column density, e) the ratios of N(¹³CO)/N(C¹⁸O) are plotted against radius f) and against the hydrogen column density, g) the relative column densities of N₂H⁺against radius, h) and against the hydrogen column density. The column densities of N₂H⁺ in CB 4 and CB 26 could not be derived, since the emission in these globules is too weak and so are missing in the plots.