 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 nz  -ps     60.758 -167.202  1.3261
  
 covariance matrix (rad2/m.y.2 e-10
    1021.0    -701.7    -704.1
    -701.7    2451.3     158.6
    -704.1     158.6     708.6
  
