Bayesian N_sim=100  N_eff=100.0
dL range: 75 -- 842 Mpc
sigma_H0(N_sim) = 8.814 km/s/Mpc (68% combined posterior)

Fisher sigma_near = 31.300 km/s/Mpc
N_sim (Bayes combined)                  : H0 = 68.54  +/-8.81 (68%)  +/-18.13 (95%) km/s/Mpc
N=1,000,000                          : sigma_extrap = 3.633 km/s/Mpc  [Bayes*Fisher_ratio (12.90/31.30=0.4121)]
  Fisher_full=12.900  ratio Bayes_extrap/Fisher = 0.282
N=3,000,000                          : sigma_extrap = 2.168 km/s/Mpc  [Bayes*Fisher_ratio (7.70/31.30=0.2460)]
  Fisher_full=7.700  ratio Bayes_extrap/Fisher = 0.282