Position-velocity diagrams of the [N II] λ6583 emission line along slits parallel to (but offset from) the major axis of the galaxy. Left to right: Offset by −2″ (i.e., to the east), 0″ (i.e., nuclear), and 2″ (i.e., to the west), from the nuclear position. Offsets along the slits (x axis) are measured from the intersection point of the slit with the minor axis of the galaxy; positive offsets are to the N side of the galaxy. Models overplotted in magenta and black follow the inclination listed in the legend; they have the black hole mass and M/L of our adopted best fit model (see Sect. 4). The black hole only (vbh) and total (vtot; galaxy plus black hole) radial velocity predictions are plotted in all panels; the galaxy prediction (vst) is plotted only in the central panel.