Distributions of N₂H⁺(1−0) integrated intensity. Left panel: original uncorrected data. Middle panel: data after applying the correction factors described in Appendix D.2 to simulate emission at a constant temperature of 10 K. Right panel: ratio between the temperature-corrected intensity and the H₂ column density (in units of 10²² cm⁻²) as a function of gas temperature. All data are color-coded as in previous figures.