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Table 1 The change in determination of the parameters of the tensor background for three different choices of cosmological data sets.

From: Stochastic backgrounds of relic gravitons: a theoretical appraisal

Data r T n s α S ΩΛ ΩM0 keqMpc
WMAP5 alone < 0.58 -0.050 ± 0.034 0.00993
WMAP5 + Acbar < 0.54 -0.048 ± 0.027 0.01004
WMAP5 + LSS + SN < 0.54 0.01008
WMAP5 + CMB data < 0.64 0.01013