Profiles coming from the pixels marked in Fig. 12 (black dots). For visualization purposes, I profiles are normalized by the percentage of scans involved in the signal addition. Curves in violet, orange, and red stand for the δI(λ)/δλ scaled by −CB_∥ for Δλ₁, Δλ₂, and Δλ₃, respectively. The corresponding B_∥ values are indicated in G following the same color scheme. Profiles from the M datasets are shown by dashed gray lines.