This article has an erratum: [https://doi.org/10.1051/0004-6361/201425540e]
Densities derived for years 2004–2011 from brightness measurements beyond the EW (top in each frame) and NS (bottom in each frame) limbs. The dashed lines are the best fits for density distributions in isothermal hydrostatic models. The corresponding densities at the base of the corona n0, with their relative rms dispersions σnEW and σnNS, and the hydrostatic temperatures TH are given for EW and NS density profiles.
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