 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 sw  -nz    -48.044  -12.809  1.5894
  
 covariance matrix (rad2/m.y.2 e-10
  130911.0  -65324.7 -228544.5
  -65324.7   35600.2  116477.0
 -228544.5  116477.0  403285.6
  
