Oxygen abundance (12+log(O/H)), nitrogen abundance (12+log(N/H)), and N/O shown within the top, middle, and bottom panels for neutral (as blue squares) and ionized (as red circles) phases. The trend is shown as a dashed line with the same color code as mentioned above for both phases. Points from the galactic center (r/r₂₅  < 0.05) are included for ionized gas (see discussion in Section 4.1). The statistics for all trends are shown in the legend and follow the same format as Figure 7.