Fig. 2: Probability distribution of ΔvT, the along-track component of the change in Dimorphos’s velocity induced by DART’s impact, generated by our Monte Carlo analysis that samples over input parameter uncertainties.
From: Momentum transfer from the DART mission kinetic impact on asteroid Dimorphos

The histogram consists of 100,000 Monte Carlo samples and is normalized to an area of unity. A Gaussian fit to the distribution indicates a mean ΔvT of −2.70 mm s−1 with a standard deviation of 0.10 mm s−1.