This procedure computes databases with the mean values of any IMG-variable for a set of administrative regions. """""""""""""Optionally, the means are also “unmixed”, i.e. specific for each crop or land cover class""""""""""""". In this way, the image data become compatible with the other agro-statistical information (official areas/yields, CGMS-outputs,…) in a spatial and thematic sense. The agro-statistical region (or district) replaces the pixel as spatial unit, and the crop/class becomes the thematic unit. The procedure also involves an important data reduction. The format of the files containing the RUM-values is described in the section Formats.