 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sw  -nb    -41.351  -31.060  1.3555
  
 covariance matrix (rad2/m.y.2 e-10
  130490.3  -65476.3 -228023.7
  -65476.3   35651.5  116282.5
 -228023.7  116282.5  402728.4
  
