On-sky results from the QACITS post-monitoring of data sets taken during the night of first light (left) and on a later run in October with the control loop closed (right). Every point represents the mean estimate of a sequence (comprising between eight and 72 acquisition frames, ten in average), with the error bars showing the standard deviation of the estimates during the sequence. The dashed circles have a radius of 0.1 λ/D_L = 9 mas.