 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NH  -su     -5.401   -1.585  2.4832
  
 covariance matrix (rad2/m.y.2 e-10
    1743.2    -271.1      49.7
    -271.1    2510.8     130.4
      49.7     130.4    1826.8
  
