 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 su  -sc     66.585  -77.677  0.2203
  
 covariance matrix (rad2/m.y.2 e-10
     506.1    -344.7    -727.7
    -344.7    1568.0    1465.8
    -727.7    1465.8    4141.8
  
