This post is a replacement for an earlier post with the same title. The material in the original post is now published in Radio Science, Volume 49, 2014, pp 680-688, doi:10.1002/2013RS005272. The result in the published paper were based on C/NOFS data acquired during 2011. A much larger 4-year data set has since been acquired and processes. The larger data base provide clear evidence of the two-component power-law spectral density functions that have long been associated with equatorial spread F (ESF). An unpublished preliminary summary of the new findings can be found in ReconcilingPowerlawStructureREV2.