They are vague vector-concepts with meanings dependent on context. Sometimes up is northward, or uphill. Sometimes it is just along a length of some kind, but which is arbitrarily established as up, similar to the Cartesian plane with one 'positive' and one 'negative' range on each axis.
The best way to view this example is "in one place, boul. Hausmann..." "in another place, rue Saint-Honoré,..." it is a kind of dichotomy, a here and a there.
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