Graphic of atmospheric parts probed during the mid-transit and egress data in a polar planetary view from Fig. 2 updated with the wind patterns. In this polar view, the radial vertical wind is seen in the same way during all in-transit exposures, but the high-velocity jet in the lower atmosphere is only visible during egress. This means its extension cannot reach the evening limb during mid-transit, as it would otherwise also influence the mid-transit data. Given that we have no ingress data, we do not know if the jet is also moving from the day to the night side over the other terminator, is part of a super-rotation, or is not present at all. This missing piece of information is replaced with a question mark.