Uncertainties in H0: SYSTEMATIC ERRORS

• Cepheid Distance Scale

• LMC true modulus ±0.13

• LMC PL Zero Point ±0.02

• HST/WFPC2 Zero Point ±0.09

• TF Distance Scale

• TF Zero Point ±0.13

• Internal Extinction Correction ±0.04

• Cepheid Metallicity Dependence ±0.08

Notes: