R² coefficients of the temperature at peak with the Hα luminosity considering H II region/GMC pairs from each galaxy in the sample separately. Top from left to right: R² coefficients versus the number of matched H II regions and GMCs, distance, inclination and total stellar mass of the host galaxy. Bottom from left to right: R² coefficients versus the galaxy’s CO luminosity, total Hα luminosity, average stellar surface density within a 500 pc radius around each of the H II region/GMC pairs and the galaxy’s offset from the main sequence. The red dashed line shows the global R² coefficient from Sect. 5.