 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ri  -ON      0.768  -87.286  5.4447
  
 covariance matrix (rad2/m.y.2 e-10
   25288.5   77231.2  -28351.7
   77231.2  258465.4  -94150.1
  -28351.7  -94150.1   37042.0
  
