 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 NH  -AP      1.911    4.723  2.4109
  
 covariance matrix (rad2/m.y.2 e-10
    3203.6      64.0     -54.7
      64.0    3609.8     164.0
     -54.7     164.0    3346.9
  
