Zoomed-in Resolve spectrum as shown in Fig. 2 right. Restricted energy bands used for our narrow-band fitting approach are indicated (dark and light grey for H-like and He-like elements, respectively). The red area shows the energy band that is excluded in all our fits to avoid biases induced by resonant scattering effects. The scaling of the y-axis (counts/s/keV) is kept constant between all panels for consistency.