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Early (2024) data had $R_{xx}$ of order kilo-ohms. An answer gives quantization accuracy and gap for each state.","problem_ref":"ba3d95e6e87789cfe6b56b95681aadac9404097a78bf2c02b6ec661cbf5c408d","references":"","settled_by":"Transport at electron temperatures below 20 mK on several devices with independent contact and geometry checks.","status_note":"2025 measurements below $40\\,\\mathrm{mK}$ found smaller $R_{xx}$ and new FQAH states; a September 2026 preprint (arXiv:2609.09422) reports fractional quantized anomalous Hall insulators, pending independent confirmation.","title":"Precision quantization of zero-field fractional Hall states in 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