B                                                                                                              Non-Concave Metafrontier   00     0.0000    0.0000    0.0000    0.0000   0.0000   0.0000                 Group frontier             00     0.0000    0.0000    0.0000    0.0000   0.0000   0.0000                 Technology Gap Ratio       00     0.0000    0.0000    0.0000    0.0000   0.0000   0.0000   