Line profile of the ortho NH₂D transition at 86 GHz towards 1390 and 4149. The velocity is built relative to the 85926.2703 MHz transition. The best fit is plotted in red from the MCMC analysis. Core 4149: N(o-NH₂D) = 1.6 × 10¹⁴ cm⁻², T_ex = 3.8 K, FWHM = 0.41 km s⁻¹, and V_LSR = −1.86 km s⁻¹; core 1390: N(o-NH₂D) = 1.2 × 10¹⁴ cm⁻², T_ex = 4.5 K, FWHM = 0.47 km s⁻¹, and V_LSR = 11.27 km s⁻¹.