Intrinsic LP in the loopy period, after removing the mean effect of the Faraday rotation. The 229 GHz band data are shown with a blue color, while the three remaining ALMA frequency bands are shown with a gray color. The implied PA of the line of nodes (l.o.n.) of the hot spot orbit as seen in the sky was estimated at about 147° east of north. The intrinsic PA of the hot spot angular momentum ℒ was found to be ∼57° east of north (or 227°, given the 180° ambiguity).