i)−o). C¹⁸O J = 2 − 1 position-velocity diagrams at constant Galactic longitude offset from (l,b) =(+5′, -3′), which is noted in the right hand upper corner of each figure. The letter in the left hand upper corner of the figures corresponds to the respective row of profiles in Fig. A.1. Note that the figures in the panel should be read from top to bottom in each column. The direction of the position-velocity cuts are parallel to the lines (C−D), (E−F), and (G−H) in Fig. 11. The offset latitude of Sgr A^∗ is 14′′. The lowest contour level corresponds to about 2σ.