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Table 1

The mean value R and the standard deviation Σ of the ratio distributions, using the channel 1 as α reference, are given. Data for the period 2007–2011 are used.

N2/N1 N3/N1 N4/N1 N5/N1 N6/N1

R2,1 Σ2,1 R3,1 Σ3,1 R4,1 Σ4,1 R5,1 Σ5,1 R6,1 Σ6,1
1.019 0.071 0.889 0.065 0.882 0.057 0.846 0.062 0.893 0.057

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