power spectrum and the single-band SPT power spectra over the multipole range $\ell \in [670,1170]$ in $\ell$-bins that match the released [[*Planck*]{}]{} power spectrum. Modes are equally weighted within each bin. The power in this multipole range is dominated by primary CMB power at our observing frequencies. This calibration method is model independent as it only requires that the primary CMB power in the SPT fields be statistically representative of the all-sky power. We estimate the uncertainty in the SPT power calibration at \[95, 150, 220\] GHz to be \[1.1%, 1.2%, 2.2%\]. The correlated part of these uncertainties is 1.0%. The high correlation is unsurprising, as the uncertainty in the calibration is dominated by SPT sample variance, which is nearly 100% correlated between the three SPT bands. The beam and calibration uncertainties are included in the power spectrum covariance matrix as described in Section \[sec:beamunc\].

Power spectrum estimation {#sec:bandpowerest}
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To estimate the power spectrum, we use a pseudo-$C_\ell$ method [@hivon02]. Pseudo-$C_\ell$ methods estimate the power spectrum from the spherical harmonic transform of the map, after correcting for effects such as TOD filtering, beams, and finite sky coverage. We use the MASTER algorithm [@hivon02] to correct for beam, apodization, and 