 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ri  -su     17.964 -107.937  4.2519
  
 covariance matrix (rad2/m.y.2 e-10
   23622.0   77113.7  -28580.5
   77113.7  257694.8  -93987.9
  -28580.5  -93987.9   35224.3
  
