Fig. 7: Comparison of X-ray images from X-EUVI and XRT.
From: Solar X-ray and EUV imager on board the FY-3E satellite

a The positions of line 1 and line 2 from X-EUVI. b The positions of line 3 and line 4 from XRT. c The normalized grey value distributions of line 1 and line 3. d The normalized grey value distributions of line 2 and line 4