 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 su  -co    -17.800   48.832  0.9301
  
 covariance matrix (rad2/m.y.2 e-10
    1516.2     443.0    -614.6
     443.0    2140.1    -253.8
    -614.6    -253.8     525.0
  
