Of course, one can't discount a cluster as an outlier, especially when the clusters are relatively the same size. The magnitude of whiff on the OTC cluster is very broad, much more so than the other cluster. I'm not quite sure how to interpret that, but that suggests to me that there is a pretty large SD. In other words, don't toss the OP and let's keep watching to see if we get better agreement from the ensembles in later runs.