Fig. 5
Left: a section of a GOES C7.1 class flare observed by Nobeyama Radioheliograph. Right: the corresponding power spectrum, where the red solid line is a power law fit to the spectrum, the red dotted line represents the 95% confidence level, and the red dashed line the 99% level. One peak is above the 99% level, at a period of 
s.
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