Top: Hα image of the LB at Δv = −50 km s^-1; locations of the line profiles in the middle panel are indicated by plus-symbols. Middle: typical Hα profiles in the dark part of the light bridge (shades of blue), and typical profiles in the bright jet footpoints (shades of red). The thick red curve is the profile of the pixel labeled 1 in Fig. 2. Bottom: DEM distribution for the pixels labeled 1–3 in Fig. 2 and an average active region area.