Out of "93 quasars", "19 of them found a significantly polarized signal." "Results indicate that the rotation axes of the quasars tend to be parallel to the lar

Out of "93 quasars", "19 of them found a significantly polarized signal." "Results indicate that the rotation axes of the quasars tend to be parallel to the large-scale structures in which they find themselves." Do quasars that aren't parallel to their large-scale structures not have a significantly polarized signal? Maybe interference from the structure or a weaker signal because of their alignment?