Upper plot: measured Fe xvii (I_λ17.05 + I_λ17.10) /I_λ15.01 line ratios for each RGS extraction regions. The solid red line corresponds to the predicted ratio without resonant scattering for the emission-weighted temperatures for each region, whereas the dashed lines are the predicted values for the coolest (upper) and hottest (lower) phases found in each region. The distances refer to those of the RGS cross-dispersion direction in the exposure. Bottom plot: 11.5−19.5 Å spectra from regions N1 and S1.