Characterizing the -ray long-term variability of PKS 2155304 with H.E.S.S. and Fermi-LAT

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Table 2

Values of the reduced χ² and associated probability for the Gaussian fits of the flux and log flux distributions for each light curve.

	Φ		log Φ
	χ²/d.o.f.	Prob	χ²/d.o.f.	Prob	σ

H.E.S.S.	50.8/17	10^-5	11.9/13	0.54	5.39
Fermi	21.6/12	0.04	15.0/11	0.18	2.57

Notes. The parameter σ is the significance level on which a lognormal distribution is preferred to a normal distribution.

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