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On the Distributions Page there are four graphs. If plain or Dowel concrete has been selected as pavement type, one of the graphs shows the distribution of the percentage of concrete surface faulting. There are two curves in the graph. The black one shows the frequencies of faulting percentages. The faulting, in %, is indicated on the horizontal axis. The frequencies of incidence as obtained during simulation, in %, are shown on the right-hand vertical axis. The other curve - the orange one - is a 'greater-than' curve. Its ordinates, measured on the left-hand vertical axis, indicate the probability of a faulting percentage exceeding the value selected on the horizontal axis. The purple curve can be used to determine the confidence intervals for the percentage of surface faulting.