Estimation of the residual stripes in the SZ map in the Virgo region. All maps have been degraded to a resolution of . Left: original data. Middle: stripe-reduced data. Right: difference between the original and the stripe-reduced maps. The colour bar in the right panel shows the difference in units of 10⁷ times the Compton parameter; the colour scale in the other panels is the same as in Fig. 5.