SNR obtained in the final cross-correlation function in each observing session listed in Table 2 as a function of the square root of the mean number of correlations obtained in a 64 ps timing bin. The purple squares indicate the results from Table 2, except for the 2017 June 21 data, which are shown as a solid green circle. For comparison, we also include here the data from Paper I as open green circles. Both the 2017 June 21 data and the Paper I data were obtained with a filter of central wavelength/FWHM of λ/Δλ = 532 nm/3 nm. The line of best fit from Figure 3 is shown as the solid line, the dashed purple line indicates the line of best fit for Arcturus, and the solid line at zero is presented to guide the eye.