 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sc  -co    -27.356   53.124  1.0587
  
 covariance matrix (rad2/m.y.2 e-10
    1056.6    -270.5   -1610.0
    -270.5    1378.4     969.1
   -1610.0     969.1    4811.1
  
