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We present a Bayesian and frequentist analysis of the DAMPE charged cosmicray spectrum. The spectrum, by eye, contained a spectral break at about 1 TeVand a monochromatic excess at about 1.4 TeV. The break was supported by a Bayesfactor of about $10^{10}$ and we argue that the statistical significance wasresounding. We investigated whether we should attribute the excess to darkmatter annihilation into electrons in a nearby subhalo. We found a localsignificance of about $3.6\sigma$ and a global significance of about$2.3\sigma$, including a two-dimensional look-elsewhere effect by simulating1000 pseudo-experiments. The Bayes factor was sensitive to our choices ofpriors, but favoured the excess by about 2 for our choices. Thus, whilstintriguing, the evidence for a signal is not currently compelling.

DAMPE squib? Significance of the 1.4 TeV DAMPE excess