The radial temperature profiles (solid black curves), the estimated temperatures (dashed red lines), and the mass averaged true temperatures (black horizontal lines) for the one solar mass models. The thin lines correspond to the data on a single line-of-sight through the cloud centre and the thick lines to data averaged with a Gaussian beam. In the right hand part of each frame, the difference between the estimated and the real mass averaged T_kin has been scaled by a factor of ten for better visibility. The column densities derived from the observations are indicated in each frame (units of 10¹⁴ cm^-2), the subscript C denoting the case with beam convolution. The true column densities are given in the first frame. For the v-model, the dotted line and the lower text entry indicate the result from a fit with two velocity components (pencil beam only).