The photospheric signatures of coronal currents, B^>(x, y), derived from (a) the SHARP photospheric vector magnetogram and (b) the lower boundary data of the optimization solution for AR 11429 on 2012 March 6 23:36 UT. The background color map in each panel denotes ﹩{B}_{z}^{\gt }(x,y)﹩, the black contours denote PILs corresponding to B_z(x, y) = 0, and the dark green vectors denote the horizontal component ﹩{{\boldsymbol{B}}}_{h}^{\gt }(x,y)﹩. The color and arrow scales are the same for both panels.