Table 5.
Results from the Monte Carlo tests used to quantify the chance probability (and related significance) of observing a spectral feature (parameterized with an LP+EP function) on top of the measured VHE gamma-ray spectrum described by an LP.
| Experimental data | MC data: 104 simulated spectra | |||
|---|---|---|---|---|
 |
pvalue (significance) |  |
pvalue (significance) | |
| Observed | 18.1 | 4.2 × 10−4 (3.5σ) | 3 | 3.0 × 10−4 (3.6σ) |
| EBL-corr | 15.8 | 1.2 × 10−3 (3.2σ) | 11 | 1.1 × 10−3 (3.3σ) |
Notes. The pvalue (and related significance) values in the “experimental data” column are derived from the nominal χ2 distribution with 3 degrees of freedom, while the numbers reported in the column “MC data” column are directly derived from the 104 simulated spectra. See text in Sect. 3.4 for further details.
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