function [ k2, k3, sigma2, t0, y0 ] = ozone2_parameters ( )

%*****************************************************************************80
%
%% ozone2_parameters returns parameters for the ozone2 ODE.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    26 January 2021
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real K2, K3: rate parameters;
%
%    real SIGMA2, nitrogen oxide source term.
%
%    real T0: the initial time, in seconds.
%
%    real Y0[4]: the initial condition at time T0.
%
  k2 = 1.0E+5;
  k3 = 1.0E-16;
  sigma2 = 1.0E+06;
  t0 = 14400;
  y0 = [ 0.0; 1.3E+10; 5.0E+11; 8.0E+11 ];

  return
end

