 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NI  -eu     -6.270 -176.879  3.2756
  
 covariance matrix (rad2/m.y.2 e-10
    3718.1       5.7      75.9
       5.7    4088.9      19.2
      75.9      19.2    3894.3
  
