Photochemical properties of the atmosphere for the fiducial case. (a) Vertical distributions of gaseous species in photochemical equilibrium (solid line). The filled circles represent the thermochemical equilibrium values at the lower boundary. For reference, the dashed lines show the abundances in thermochemical equilibrium, where the eddy diffusion transport is also ignored. (b) Vertical profile of the photodissociation rate of each species, namely, the number of molecules that photodissociate per unit volume and unit time. Note that panel (a) is basically the same as Figure 2 of Paper I with the differences being in the value of k_v and k_th, the integration method for the equation of hydrostatic equilibrium, and the resolution of the input stellar spectrum only.