The output of MEM is a list of matrices: MAGpop, MAGref, IQRpop, IQRref, and MEM_matrix. These can be viewed in the console by entering the name of the MEM output object (e.g. MEM_vals) as a command at the command line. Individual matrices can be viewed using the $ operator to subset them by name. Here, the MEM_matrix object is displayed using MEM_vals$MEM_matrix.