Line-of-sight velocities from a redshifted cluster in emission, from a k-means model with 100 clusters. Top row: representative profile of the new cluster (violet lines) compared to cluster 16 (green lines) in the results. The solid black lines are the mean spectra. Bottom row: Distribution of line-of-sight velocities from each pixel in the new cluster. In the line-of-sight velocity, there are two common distributions: one with down-flows and one with up-flows. The blue and red dashed lines are averages of the up-flows and down-flows, respectively. The solid black line is the average velocity of the cluster.