Left: UV sources overlaid on the CO(9–8) integrated intensity image. ~1.3 × 10⁴ stars we used for the derivation of G_stars (right; Appendix B for details) are presented here with different symbols depending on the stellar effective temperature T_eff: T_eff ≥ 3 × 10⁴ K (1406 stars as the red crosses; mostly O-type or W–R), 10⁴ K ≤ T_eff < 3 × 10⁴ K (9807 stars as the orange circles; mostly B-type) and T_eff < 10⁴ K (2116 stars as the blue triangles). The location of R136 is also indicated by the black circle. Right: stellar UV radiation field G_stars on the plane of R136 (in units of 10³ Mathis fields). The pixels used for our PDR modeling are outlined in red.