This is to document that at the beginning of O3b, before the new O3b uncertainty envelope is ready, onlinePE is using the last C00 O3a envelope:
modelparams_H1_20190909
O3_H1_A_MCMC_20190404.hdf5
O3_H1_A_GPR_20190909_multi.hdf5
O3_H1_C_MCMC_20190904_nomconfig_fmin20Hz_finaltrial.hdf5
O3_H1_C_GPR_20190909_nofsQcorr_fmin20Hz_lengthscaleZp5_withPCALXHFdata.hdf5
Also see history in PE git: https://git.ligo.org/pe/O3/calibrationenvelopes/tree/master/LIGO_Hanford