 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sw  -na    -32.483  -28.912  1.2325
  
 covariance matrix (rad2/m.y.2 e-10
  130515.0  -65454.5 -227919.4
  -65454.5   35613.2  116208.8
 -227919.4  116208.8  402753.9
  
