Fig. 1.

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Overview of coronal states during the August 21, 2017 TSE. Left panel: Coronal image of Fe X 6374-Å observed at 17:18:16.570 UT during the August 21, 2017, TSE. Right panel: SDO/AIA RGB composite image on August 21, 2017. The red channel represents the 211 Å data observed at 17:09:33 UT, the green channel denotes the 193 Å data observed at 17:11:40 UT, and the blue channel is the 171 Å data observed at 17:12:09 UT. The 6374-Å and the SDO/AIA composite coronal images have both been rotated so that the vertical axis is in the north-south direction.
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