On the left the distributions of the displacement variable δ_RECO are compared between gamma simulations and excess events from the on region. The gamma simulations are point-like simulations at 40° zenith and 0.7° offset. A spectral index of 3.5 is assumed. After applying a cut of δ_RECO ≥ 0.009 the distributions, as well as α have been derived again and are compared in on the right. Both the MC and excess distribution are normalised to an area under the curve of 1.