Temporal evolution of the B1 flare of 6 June 2020 as seen in X-ray fluxes, average temperatures of sub-regions and timing of radio bursts. X-ray fluxes in the range 6 keV–7 keV are characterized by several peaks labeled with X₀ to X₂ (panel 1). The time axis was corrected for the light travel time. The timing of type-III bursts (dashed lines and panel 5) are shown in all panels. Radio bursts with fluxes above 10 SFU are displayed in bold line styles. Average temperatures of the AR based on the DEM reconstruction (panel 2). Temperature (panel 3) and EM evolution (panel 4) of the sub-regions (Fig. 5).