OCtr/ sigma-T/kg m**-3 ( (rho(insitu_T,S,0)-1000 ) 638 OCtr/ sigma-T/kg m**-3 ( (rho(insitu_T,S,0)-1000 ) OCtr/ sigma-T/kg m**-3 ( (rho(insitu_T,S,0)-1000 ) OCtr/ sigma-T/kg m**-3 ( (rho(insitu_T,S,0)-1000 )