 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NI  -su     -7.793 -178.210  3.3060
  
 covariance matrix (rad2/m.y.2 e-10
    3735.5    -346.4     144.3
    -346.4    4520.4      73.4
     144.3      73.4    3923.6
  
