 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 ND  -an    -86.766 -172.578  0.1923
  
 covariance matrix (rad2/m.y.2 e-10
    1745.5     203.0     -46.0
     203.0    2498.2     173.5
     -46.0     173.5    1912.6
  
