Number of CNEOS USG Sensors impact – NEO pairs, ND, with D values below a limiting threshold (red line) compared to the predicted number based on random associations (blue circles with error bars) for D_{S H}, D′, and D_H. The blue circles represent the mean number of pairs identified between 310 random samples drawn from the USG impactors PDF (Fig. 3) with the observed 35 012 NEOs from 500 iterations of KDE sampling. The blue-shaded indicates a zone encompassing three standard deviations. The number of low-D value pairs corresponds very well to the predicted number based on random associations using the KDE distribution shown in Figs. 2, indicating no substantial evidence supporting streams in the dataset.