 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sw  -ar    -51.543  -48.393  1.4055
  
 covariance matrix (rad2/m.y.2 e-10
  130720.2  -65260.4 -227983.6
  -65260.4   35821.9  116468.2
 -227983.6  116468.2  402836.1
  
