 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sm  -xx     49.951  -84.515  0.3393
  
 covariance matrix (rad2/m.y.2 e-10
      32.5      47.2      -2.4
      47.2     163.0      -6.2
      -2.4      -6.2      37.2
  
