 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sc  -an    -76.911  -73.402  0.1759
  
 covariance matrix (rad2/m.y.2 e-10
     333.3    -322.0    -873.4
    -322.0     427.5    1140.8
    -873.4    1140.8    3894.7
  
