 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 in  -su     21.191   28.165  0.4443
  
 covariance matrix (rad2/m.y.2 e-10
     228.3      67.7      13.6
      67.7    1579.1     268.0
      13.6     268.0     223.1
  
