Integrated intensity maps of the CH₃ OH 2_1,1−1_0,1 line for the low-mass protostar B1-c (left), the CH₃OH 5_1,4−4_1,3 line for the low-mass protostar Per-emb 13 from PEACHES (middle), and the CH₃OH 8_0,8−7_1,6 line for the high-mass 881427 cluster (right). The color scale is shown on top of each image. The images are integrated over [−5,5] km s⁻¹ with respect to the V_lsr. The white vertical line in the colorbar indicates the 3σ threshold. The peaks in the continuum are indicated with the white stars. The white ellipse in the lower right of each image depicts the beam size, and in the lower left a physical scale bar is displayed.