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The peak speeds reported by EP in 3000 samples taken between March 29, 2014 to May 16, 2014. The preliminary results for April did not remove the effects of solar rotation, and hence have a floor of about 2 km/s. Data in May have that correction applied, and the remaining floor is a combination of differential rotation, meridional flow, super-granulation, and other ubiquitous sources. Spacecraft maneuvers and other calibrations are also present in the April results, most notably during April 23.
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