 ---
 angular velocity
            lat.n    lon.e      rate (deg./m.y.
 JZ  -ri     25.851   71.112 25.2713
  
 covariance matrix (rad2/m.y.2 e-10
   28888.1   77675.6  -28524.5
   77675.6  263145.7  -94678.7
  -28524.5  -94678.7   40704.7
  
