Fig. 6. Relative intensity difference between the meridian and the other locations along the limb vs. formation temperature.
Diamonds : large µ sector (only quiet Sun); Stars : small µ sector (including coronal hole). The solid line shows a second order polynomial fit to the stars. Due to the larger uncertainty of the parameters of the Fe XII line, its value is not used for the regression. A representative error bar is also plotted (see text for details).