Cumulative projected total mass profile (left) and total surface mass density profile (right) computed from the centre of the main cluster component, close to the BCG. The areas in red correspond to the 95% confidence level intervals of our reference lens model for ACT0102. Vertical lines show the radial distances of the multiple images used to reconstruct the cluster total mass distribution. The profiles of other clusters are plotted in grey and are limited to the radial distances over which the multiple images are visible. The top panels show the absolute values, and the bottom panels show the values rescaled to those of M_200c and R_200c (see the axis labels).