Results of the single-plane fit for RX J1713. (a) Maps of ΔN _g(1) derived from Equation (6) and (b) ﹩{\widehat{N}}_{{\rm{g}}}(1)﹩ derived from Equation (2). The superposed contours in both panels (a) and (b) indicate excess counts of TeV gamma rays. The lowest contour level and contour intervals are 12 and 5 counts, respectively. (c) A plot of ΔN _g(1) with respect to ﹩{\widehat{N}}_{{\rm{g}}}(1)﹩. The horizontal and vertical error bars shown in the left bottom corner indicate the median values of ﹩\sigma ({\widehat{N}}_{{\rm{g}}}(1))﹩ and σ(ΔN _g(1)) (see Equations (6) and (7) in Paper III), respectively.