Hyperfine Coupling Constant

 Dear CCLers ;
 I have a problem in calculating hyperfine coupling constants of
 formaldehyde radical cation using MOPAC. But the result show only
 following part for hyperfine coupling constants.
    H 1 0.17398 C 2 -0.00748 O 3 0.00326 H 4 0.17398
 I cannot understand those numbers and what units.
 If you have any idea on this matter I'd appreciate it.
 Ohyun Kwon
 Department of Chemistry
 Auburn University
 Auburn, AL 36849