Schechter function Markov chain Monte Carlo (MCMC) fits to the d²N/dzdW data by Chen (2017, C17). The 6.0 < z < 7.1 bin is complemented with the low-W_r measurement reported by Bosman et al. (2017). The C17 upper limit is treated as a uniform prior truncated at the upper limit value. The fits are constrained such that the area below the fit curve equals the total dN/dz in the exponential fits, i.e., N^⋆ in C17. This results in some correlation between the Schechter parameters W^⋆ and α. A pure exponential (α = 0) is ruled out at the 1-σ level in three cases. The ± 1-σ confidence band around the fit curve is built from the MCMC samples.