 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 PM  -eu     -1.212 -122.458  0.1270
  
 covariance matrix (rad2/m.y.2 e-10
    1936.1     -30.4     -25.7
     -30.4    3138.7     134.0
     -25.7     134.0    2129.3
  
