DENSITY STRUCTURE INSIDE A POLAR CORONAL HOLE

Analysis of white-light coronagraph observations of a polar coronal hole during 1973 June 29-July 13 led Munro & Jackson (1977) to infer that the density inside the hole varied as a function of heliocentric radial distance, r, and colatitude theta. However recent analysis of the white-light data during 1973 December 3-1974 January 24, by Guhathakurta et al. (1993) indicates that the density inside a polar coronal hole, within limits of uncertainties inherent in the coronal white-light observations, can equally well be described as a function of r only. In this study we reexamine the data from the Munro & Jackson period and draw the conclusion that within the limits of observational uncertainties, electron density in the polar coronal hole is independent of magnetic latitude and longitude.