&SPECIES_PARAMS
 PSPECIES="HCHO            ",
 PRELDIFF=  1.3    ,
 PHENRY=  6000.00000    ,
 PF0=  0.00000000    ,
 PDQUER=  0.00000000    ,
 PDSIGMA=  0.00000000    ,
 PWEIGHTMOLAR=  30.0000000    ,
 /