Contours of PA rotation (χ^SR + χ^GR) for different i = 30°, 60°, and 80° and η = 0, ±20° in the disk coordinates (r, φ), where r is measured in units of Schwarzschild radii. Azimuth increases in the counterclockwise direction, as is shown by the arrow in panel (a). Numbers on the contours correspond to the rotation angle (in degrees). The thick red line without a mark corresponds to ±90° rotation. Matter is assumed to have a purely circular Keplerian velocity in the counterclockwise direction (σ = 90°). The dashed line indicates the location of the ISCO. Contours corresponding to η = 0 (upper row) match those shown in Loktev et al. (2022). The effects of matter elevation above (or below) the orbital plane are clearly visible when comparing to the case of in-plane rotation. If matter is located in front of the BH (middle row), for the same radius from the BH the GR and SR effects appear to be less pronounced.