 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sm  -su      2.160   -2.736  0.0399
  
 covariance matrix (rad2/m.y.2 e-10
     274.5      40.5      34.1
      40.5    1254.4     207.0
      34.1     207.0     237.9
  
