{
  "note": "Published Rydberg constants paired with the proton radius each determination used or produced. Factual transcriptions with attribution; no source file is redistributed.",
  "points": [
    {
      "id": "codata2006",
      "label": "CODATA 2006",
      "role": "before",
      "rydberg_per_m": "10973731.568527",
      "rydberg_u_per_m": "0.000073",
      "radius_fm": 0.8768,
      "radius_sigma_fm": 0.0069,
      "includes_muonic": false,
      "source": "https://arxiv.org/abs/0801.0028",
      "citation": "Peter J. Mohr, Barry N. Taylor and David B. Newell, CODATA recommended values of the fundamental physical constants: 2006. Reviews of Modern Physics 80, 633-730 (2008). DOI: 10.1103/RevModPhys.80.633.",
      "locator": "arXiv:0801.0028v1, recommended values (Table 49) for R-infinity; Table 45 adjustment 4 (the final adjustment) for the paired radius 0.8768(69) fm"
    },
    {
      "id": "mpq2026",
      "label": "Hydrogen 1S-2S with 2S-6P, 2026",
      "role": "electronic",
      "rydberg_per_m": "10973731.568152",
      "rydberg_u_per_m": "0.000014",
      "radius_fm": 0.8406,
      "radius_sigma_fm": 0.0015,
      "includes_muonic": false,
      "source": "https://www.nature.com/articles/s41586-026-10124-3",
      "citation": "Maisenbacher et al., Nature 650, 845-851 (2026). DOI: 10.1038/s41586-026-10124-3.",
      "locator": "Section R-infinity and rp from atomic hydrogen, paragraph after equation (9); radius from equation (9)"
    },
    {
      "id": "bullis2026",
      "label": "Hydrogen 1S-2S with 2S-nS, 2026",
      "role": "electronic",
      "crydberg_khz": "3289841960252.9",
      "crydberg_u_khz": 9.7,
      "radius_fm": 0.8433,
      "radius_sigma_fm": 0.0031,
      "includes_muonic": false,
      "source": "https://journals.aps.org/prl/abstract/10.1103/lgl2-6cb8",
      "citation": "Bullis et al., Physical Review Letters 136, 123001 (2026). DOI: 10.1103/lgl2-6cb8.",
      "locator": "Abstract (publisher record and arXiv:2604.26401v1)"
    },
    {
      "id": "codata2022",
      "label": "CODATA 2022",
      "role": "adjustment",
      "rydberg_per_m": "10973731.568157",
      "rydberg_u_per_m": "0.000012",
      "radius_fm": 0.84075,
      "radius_sigma_fm": 0.00064,
      "includes_muonic": true,
      "source": "https://physics.nist.gov/cuu/pdf/JPCRD2022CODATA.pdf",
      "citation": "Mohr, Newell, Taylor and Tiesinga, Journal of Physical and Chemical Reference Data 54, 033105 (2025). DOI: 10.1063/5.0279860.",
      "locator": "Table XVI, column Complete; recommended value of R-infinity"
    }
  ]
}