Colour maps of the deviation measures χ_C (odd columns) and χ_H (even columns) in the last snapshot of the time series of the G2V (left pair of columns), K0V (middle), and M2V (right) stars. The top row corresponds to the 18OB opacity setup; the middle, to the 4OB; and the bottom, to the grey. The corresponding discrete colour-bar is positioned over each column, ranging between 0–30% and 0–80% for χ_C and χ_H, respectively. The black colour in the colour-bar corresponds to χ_C > 30% and χ_H > 80%. The division of the colour-scale is non-uniform. The circles mark the positions in the snapshots of the examples shown in Fig. 15 (the colour of the circles matches the colour of their corresponding curves in the figure).