 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ri  -yz     17.215 -106.944  4.2991
  
 covariance matrix (rad2/m.y.2 e-10
   23582.8   77230.1  -28585.2
   77230.1  257031.0  -94073.6
  -28585.2  -94073.6   35230.8
  
