η Aql fit. Various panels show pulsation and radial velocities with spline model and residuals (panel a)); angular diameters and residuals, with the baseline color-coded for the data and CSE-biased model – as a dash line, based on the model shown in Fig. 2 – (panel b)); effective temperatures (panel c)); photometric measurements and model (panels d) to m)) for different photometric bands or colors. Typical error bars are shown on the right side of the plot, below the reduced χ² values.