 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 am  -ND     84.155 -123.495  0.2311
  
 covariance matrix (rad2/m.y.2 e-10
    1872.4    -145.9    -127.7
    -145.9    2469.6     415.2
    -127.7     415.2    2434.9
  
