WMAP + LFI likelihood in clik format To use it in CosmoMC: - download it in the Planck data directory inside clik_14.0/low_l/bflike/ wget https://web.fe.infn.it/~pagano/low_ell_datasets/wmap_lfi_legacy/lowTEB_SMW_WMAP_LFI_legacy.tgz - unpack with tar xzvf lowTEB_SMW_WMAP_LFI_legacy.tgz - inside CosmoMC/batch3 create a file named bflike_lowTEB_wmap_lfi.ini filled with #clik likelihood file use_clik = T clik_data_commanderTT = clik_data_lowTEB = %DATASETDIR%clik_14.0/low_l/bflike/lowTEB_SMW_WMAP_LFI_legacy.clik clik_speed_lowTEB = -1 clik_params_lowTEB = %DATASETDIR%planck_calib.paramnames DEFAULT(planck_calibration.ini) - now in your CosmoMC parameter file add DEFAULT(batch3/bflike_lowTEB_wmap_lfi.ini)