UDMD provides as an output the best estimated depth/velocity/thickness and their uncertainties and also a given number of the simulated depth surfaces. For a given structural target,  UDOMORE Depth will compute the GRV from each simulated depth surfaces  using  Petrel "map base volumetric computations" within a Petrel workflow that we provide. The GRV curve is obtained by sorting values of the simulated GRVs by increasing order , UDOMORE Depth associates  the depth realization (map) to  a given quantileon the GRV curve. The way to derive P10, P50 and P90 depth scenarios could be discussed in more details by request.