Results of the DEM calculation at 08:33 UT on 2022 March 07. (a) ROI for the DEM calculations. The red box in the first column of images marks the region shown in the remaining column of images. The white contour in the remaining column highlights the specific ROI. (b) Positions of the Solar Orbiter (purple dot) and SDO (green dot). (c) Comparison of DEM results from FSI 174 Å + AI-generated (purple line) images and AIA images. The vertical error bars represent the uncertainties of the DEM values, while the horizontal error bars indicate the temperature resolution.