Trial values for the distance to NGC 4258 and associated χ² values. Besides the Reid et al. (2019) measure at D = 7.58 ± 0.11 Mpc (shown as gray band) we also tried increasing or decreasing the distance by ±5% and 10% (black crosses). The result its a large internal inconsistency in the distance network (due to other geometric anchors) that is highly significant. (See also Table D.1 for impact to H₀). The global minimum (vertex) is marked by a red cross.