Metallicity gradients inferred from the Pilyugin & Grebel (2016) S-calibration (green) and the N₂S₂Hα (violet) from Brazzini et al. (2024). The dashed green and violet lines indicate the best-fits to our data, and the shaded area indicates the 1-σ scatter. Blue and gray lines and shaded areas are the gradients obtained from direct oxygen abundance measurements by Magrini et al. (2010) and Rogers et al. (2022), respectively. The stars yellow-edged stars are H II regions hosting WR stars.