Scatter plots of various GMC properties as a function of the Hα luminosity for three different MOPs of the H II–GMC pairs: 10% for the left column, 40% for the middle one, and 70% for the right one. The GMC properties are, from top to bottom: the molecular mass, the characteristic turbulent linewidth, the surface density, and the peak temperature. The solid black lines show a power-law fit and its uncertainty for each scatter plot. The dashed lines show the ±3σ levels from the fitted line. The solid red line represents the linear regressions obtained in the leftmost column, for comparison. The fitted line properties are displayed at the bottom-right corner of each panel.