Overview of the weather and seeing conditions at the SST on 6 September 2017. The red curve represents the solar intensity in arbitrary units as measured by the SHABAR showing a smooth curve, which indicates a cloud-free day. The Fried parameter r₀ is plotted in blue. The black curve represents the scaled GOES X-ray flux, and the vertical light-blue bands in the background refer to times when the SST flare data were taken.