DGR and α_{¹²CO(1−0)} trends and atomic/molecular gas profiles Left: the trend of α_{¹²CO(1−0)} and DGR as a function of the log(W_CO/Σ_H I), which roughly translates to the molecular-to-atomic gas fraction. The points indicate the individual solution pixels. The color indicates the galactocentric radius. The black line indicates the binned trend, and the dark-shaded region shows the 1σ scatter. The vertical dashed line is arbitrarily drawn and shows approximately beyond where the two parameters start to deviate from a flat trend. Right: radial profiles of Σ_H I and Σ_mol at solution pixel scale resolution (∼2 kpc). The line indicates the radially binned values. The bottom panel shows the ratio of molecular to atomic gas mass surface density. The horizontal dotted line indicates unity between the molecular and atomic gas surface density.