Mg i AD_In/Out,Tail differences between the orbit #5 (before planetary transit) and the orbit #2 (after transit) using a 81 km s^-1 band width (histogram). For comparison, the same differences have been measured in the stellar continuum blue-ward and red-ward of the Mg i line (blue and red lines, respectively). No differential absorption is detected, except in a single pixel that corresponds to a blue-shifted velocity domain from  − 67 to  + 14 km s^-1 (see text).