#DEFVAR
{1}   O3          = 3O ;          {A: ozone}
{2}   CH4         = C + 4H ;      {A: methane}
{3}   CO          = C + O ;       {A: carbon monoxide}
{4}   H2O2        = 2H + 2O ;     {A: hydrogen peroxide}
{5}   HNO3        = H + N + 3O ;  {A: nitric acid}
{6}   MeOOH       = C + 4H + 2O ; {A: methyl hydro peroxide}
{7}   HCHO        = C + 2H + O ;  {A: formalydehyde}
{8}   MeOH        = C + 4H + O ;  {A: methanol}
{c -- non advected species --- }
{9}   O1D         = O ;           {N: oxygen atomic first singlet state}
{10}  OH          = O + H ;       {N: hydroxyl radical}
{11}  HO2         = H + 2O ;      {N: perhydroxyl radical}
{12}  NO          = N + O ;       {N:1 nitric oxide}
{13}  NO2         = N + 2O ;      {N:1 nitrogen dioxide}
{14}  NO3         = N + 3O ;      {N: nitrogen trioxide}
{15}  N2O5        = 2N + 5O ;     {N: dinitrogen pentoxide}
{16}  HNO4        = H + 4O + N ;  {N: HO2NO2 peroxynitric acid}
{17}  MeO2        = C + 3H + 2O ; {N: methylperoxy radical}
{18}  PAA         = 2C + 4H + 3O;      {A: peroxy acetylic acid}
{19}  PAN         = 2C + 3H + 5O + N;  {A: peroxyacetylnitrate}
{20}  PA          = 2C + 3H + 3O;      {N: peroxy acetyl radical}
{21}  CH3COOH     = 2C + 4H + 2O;      {A: acetic acid}
OHCH2O2 =   IGNORE ;
HCOOH =  IGNORE ;
#DEFFIX
{1}   H2O         = H + 2O ;     {water}
{2}   M           = IGNORE ;     {third body}