Kurtosis of wavelet coefficients for the wavelet scales defined in Vielva et al. (2004). Green and red bands show the 1σ and 2σ spread of kurtosis values in 1000 Gaussian simulations (left panel) and 1000 non-Gaussian model simulations (right panel). The black crosses indicate the kurtosis values computed from the Planck data; the grey crosses show the values derived after masking the brightest spot for the given wavelet scale. The grey lines show the 2σ limits after masking the brightest spot for the given scale. The masking is performed with a disc of radius 5 degrees.