Updated NICER PSR J0740+6620 Illinois-Maryland MCMC Samples

Posterior Samples from "A More Precise Measurement of the Radius of PSR J0740+6620 Using Updated NICER Data."  Our primary mass and radius samples can be found in "J0740_NICERXMM_full_mr.txt" 

Files ending in "all.txt" include values for all model parameters, while files ending in "mr.txt" contain only the mass and radius values for each sample. Files named "NICERonly" include samples from analyses of only NICER data, while files named "NICERXMM" hold samples from joint analyses of NICER and XMM-Newton data. "full", "partial" and "helium" indicate that those samples are from analyses using fully ionized hydrogen atmosphere models, atmosphere models allowing partially ionized hydrogen, and ionized helium atmospheres respectively.