Mass fraction of four different PAHs for the directly imaged planet model (d =10 au, T_int = 700 K, C/O = 1.2, log(g) = 3.0) for different metallicities. Top left: anthracene. Top right: perylene. Bottom left: coronene. Bottom right: ovalene. Similar to Fig. 7, we kept a lower limit of 10⁻²⁰ for molecular abundance. [Fe/H] = 0 and 1 cases produce an insignificant amount of PAHs in the atmosphere and hence are not shown here.