Differential Doppler shift (v_los) of Fe i 6302−Fe i 6301 of the active region observed from 15 to 20 August 1999. No twist or azimuthal rotation along the line-of-sight with respect to the sunspot center is observed. The field-of-view is 160    ×    110 arcsec². The AR coordinates are (15th (E 797, N 42), 17th (E 507 , N 96), 19th (E 141, N 185), and 20th (E 127, N 189). The center disk direction is indicated by blacks arrows. The field of view is 160    ×    110 arcsec².