 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NI  -pa      6.946 -169.621  3.2484
  
 covariance matrix (rad2/m.y.2 e-10
    3532.3     -75.3      94.6
     -75.3    3549.4     -57.0
      94.6     -57.0    3636.6
  
