2D histograms of the overall rSFMS (top row), rKS (center row), and rMGMS (bottom row) using all available pixels from our sample and probed at spatial scales of 100 pc (left column), 500 pc (middle column), and 1 kpc (right column). The x-axis binning and the best-fitting power law are indicated with red dots and a red dashed lines, respectively. The measured slope and its error are stated in each panel.