Physical properties of the ISM of CR7. From left to right, the electron temperature, gas-phase metallicity derived with the direct method (T_e method), and the gas-phase metallicity derived with PROSPECTOR performing an SED fitting are shown (see Sect. 3.4 and Sect. 3.6 for details). Spaxels at S/N ≤ 3 for the [O III]λ4363 are masked. Black contours are arbitrary [O III]λ5007 flux levels. The black crosses mark the positions of the three components.