# BICEP/Keck Array June 2021 Data Products
# BICEP/Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
# http://bicepkeck.org/
#
# File: BK18_Nl_fsky_20210607.txt
# Date: 2021-06-07
#
# This file contains noise bandpowers for each ell bin, Nb,
# the standard deviation on these bandpowers, sigma(Nb), and effective
# fsky, which can be calculated from the first two quantities.
# Specifically, we calculate fsky as
#   1 / (2 * ell * Delta(ell)) * (sqrt(2) * Nb / sigma(Nb))^2,
# where ell is the nominal bin center and Delta(ell) is the
# nominal bin width. Nb and sigma(Nb) are in units of uK^2 and have
# not been scaled by ell * (ell+1) / (2*pi).
#
# Nb and fsky are plotted in Figure 3 of BK-XIII. For that figure, the
# x-axis position of the points is set to an ell value corresponding
# to the effective bin center, not the nominal bin center provided here.
# Those effective bin centers are calculated as the center of mass of
# the bandpower window functions (which can be found in the BK18 CosmoMC
# data release).
#
# Column 1: bin number
# Column 2: ell (nominal bin center)
# Column 3: Delta(ell) (nominal bin width)
# Columns 4-6:   Nb [uK^2], sigma(Nb) [uK^2], fsky for BICEP3 95 GHz in BK18
# Columns 7-9:   Nb [uK^2], sigma(Nb) [uK^2], fsky for BICEP2/Keck 150 GHz in BK18
# Columns 10-12: Nb [uK^2], sigma(Nb) [uK^2], fsky for Keck 220 GHz in BK18
#
1   37.5  35  4.35e-06  1.15e-06  0.0108  7.76e-06  2.61e-06  0.0067  8.28e-05  2.89e-05  0.0062
2   72.5  35  2.15e-06  2.99e-07  0.0204  2.58e-06  4.69e-07  0.0119  2.51e-05  4.63e-06  0.0116
3  107.5  35  2.02e-06  2.39e-07  0.0189  2.22e-06  3.06e-07  0.0139  1.97e-05  2.67e-06  0.0145
4  142.5  35  2.09e-06  1.97e-07  0.0226  2.23e-06  2.54e-07  0.0154  1.90e-05  2.16e-06  0.0154
5  177.5  35  2.26e-06  1.81e-07  0.0249  2.45e-06  2.49e-07  0.0156  1.98e-05  1.93e-06  0.0171
6  212.5  35  2.46e-06  1.93e-07  0.0217  2.84e-06  2.40e-07  0.0189  2.12e-05  2.01e-06  0.0150
7  247.5  35  2.77e-06  2.00e-07  0.0221  3.51e-06  2.96e-07  0.0162  2.38e-05  2.03e-06  0.0158
8  282.5  35  3.19e-06  2.11e-07  0.0230  4.53e-06  3.54e-07  0.0165  2.73e-05  2.17e-06  0.0161
9  317.5  35  3.75e-06  2.41e-07  0.0218  6.02e-06  4.75e-07  0.0145  3.15e-05  2.42e-06  0.0152