Data accompanying arXiv:2012.06267. fullsky.npz contains bandpowers measured from 50,000 full-sky realisations produced using the methodology described in the above paper. cutsky.npz is the same but using the Euclid-like mask described in the paper. The shape of the data is (50000, 55, 10): 50,000 realisations; 55 power spectra in diagonal ordering as returned by synfast, i.e. starting with auto-spectra then proceeding onto the first diagonal of the symmetric power spectrum matrix, etc.; 10 bandpowers logarithmically spaced from l = 2 to l = 2000. Feel free to use, but please cite the paper if you make use of these in a publication.