 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 am  -ca     36.434  117.158  0.1689
  
 covariance matrix (rad2/m.y.2 e-10
     351.9    -105.4     -69.2
    -105.4    1033.6     358.6
     -69.2     358.6     838.5
  
