C***********************************************************************
C     NR - TOTAL NUMBER OF CHEMICAL REACTIONS
C     N2 - BIMOLECULAR REACTIONS NUMBER
C     N3 - THREE MOLECULAR REACTIONS NUMBER
C     NMM- MONOMOLECULAR REACTIONS NUMBER
C     NHET-HETEROGENEOUS REACTIONS NUMBER
C     NCL- PSC REACTIONS NUMBER
C     NAER-BACKGROUND AEROSOL REACTIONS NUMBER
C***********************************************************************
      PARAMETER(NR=137,N2=94,N3=14,NMM=4,NHET=23,NPSC1=8,NPSC2=8)
      COMMON/CHEMR/N(2,NR),NNR(2,NR),PE(N2),E(N2),AMU(NHET),
     *RO(N3),R1(N3),SN(N3),SB(N3),GAM(NHET),ST(3,NMM),RRA(NR),NST(NMM)
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