TT Power Spectrum is a text file containing the data points used to generate the plots.
CMB only spectra
CMB-only bandpowers, marginalized over astrophysical foregrounds.
These spectra are released for plotting purposes and do not include the full covariance.
Unbinned measurements available from the Planck Legacy archive are plotted at l < 30, and
binned measurements provided to LAMBDA by the Planck team are plotted at higher l.
The plotted data are from the ACT 3-year CMB likelihood package on LAMBDA.
They are based on the SPT measurements of
Story et al. 2013.