 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 xx  -SB     -6.877  148.112  8.1107
  
 covariance matrix (rad2/m.y.2 e-10
    6527.6      26.2      -3.8
      26.2    6723.8       7.1
      -3.8       7.1    6548.5
  
