Spectral line fits of CH₃OH (left), ¹³CH₃OH (middle), and (right) for Per-emb 13 from the PEACHES sample (top row) and 881427C from the ALMAGAL sample (bottom row). The data corrected for the V_lsr are shown in black, and the fit for T_ex = 150 K is shown in red. All lines are >3σ detections. The top row shows the CH₃OH 5_1,4−4_1,3 (E_up = 50 K), ¹³CH₃OH 23_3,20−23_2,21 (E_up = 675 K), and lines, and the bottom row shows the CH₃OH 8_0,8−7_1,6 (E_up = 97 K), ¹³CH₃OH 14_1,з−13_2,12 (E_up = 254 K), and lines.