Histograms of the GMC properties. From left to right and top to bottom: CO(2–1) FWHM, molecular gas mass from CO(2–1), effective radius, peak H i temperature, galactocentric radius, atomic gas mass. In each panel, the thick black line corresponds to the whole cloud sample, the red line to type A clouds, the green line to type B clouds, and the blue line to type C clouds. The solid and dashed versions of each color correspond respectively to no thresholding and a 0.7 probability thresholding for the clouds (see details in text).