Fig. 4.
Latitude histograms of the RHESSI flares with longitudes |λF| ≤ 25° that occurred when the HSB was at central meridian. In the left column are data for Cycle 23 and the right for Cycle 24, separated by GOES class (top row X/M-class then C, B, and A-class on the bottom row). The colours indicate the polarity change at the sector boundary, with blue as (−, +) and red as (+, −).
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