Normalized distribution function of Tobs (upper) and βobs (middle) for the whole sky. The lower panel shows the density plot of βobs vs. Tobs, revealing an overall anticorrelation. The grey scale and the black contours show the density of points on a linear scale with contours equally spaced. The dispersions are σ(βobs) = 0.1 and σ(Tobs) = 1.4 K (Table 3).
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