We draw attention to the larger number of measurements of the last night compared to the others. Despite this, for this campaign the mean measuring time was more than 4 hours per night providing a high number of measurements of the seeing, outer scale and isoplanatic angle. A typical temporal evolution of the AOP during one night is shown in Fig. 4 . They are typical of our data set, being more frequent on some nights, less frequent or absent on some other nights.
Burst duration is about few minutes.
Figure 5 shows the best night measurements during this campaign. One can remark that the seeing is usually under 1 arcsec and that all the AOP are less dispersed than the results shown in Fig. 4 which indicates the stability of the conditions during this night. The median value of the seeing is 0.85 arcsec and the best measured value is 0.66 arcsec. Figure 6 presents the summary of the AOP measurements during this campaign. So, for each night the reported AOP values in Fig.