{
  "source": "https://www.nature.com/articles/s41586-026-10124-3",
  "locator": "Equations (4)-(10), Table 1, R-infinity paragraph after equation (9), and Methods equations (16)-(18)",
  "components": [
    {
      "id": "half",
      "label": "2S-6P 1/2",
      "frequency_khz": "730690111486.30",
      "sigma_khz": 0.69
    },
    {
      "id": "threehalf",
      "label": "2S-6P 3/2",
      "frequency_khz": "730690516650.91",
      "sigma_khz": 0.66
    }
  ],
  "corrections": {
    "hfs_khz": -132985.25,
    "hfs_sigma_khz": 0.01
  },
  "centroid_sigma_khz": 0.48,
  "splitting_sigma_khz": 0.97,
  "theory": {
    "origin_khz": "730690248610.79",
    "reference_radius_fm": 0.8406,
    "reference_sigma_fm": 0.00039,
    "qed_sigma_khz": 0.18,
    "printed_total_sigma_khz": 0.23,
    "splitting_khz": 405164.51,
    "splitting_sigma_khz": 0.01
  },
  "printed": {
    "centroid_khz": "730690248610.79",
    "splitting_khz": 405164.62,
    "radius_fm": 0.8406,
    "sigma_fm": 0.0015,
    "codata2014_discrepancy_sigma": 5.5,
    "radius_qed_part_fm": 0.0005,
    "radius_exp_part_fm": 0.0014,
    "sm_rp_part_khz": 0.14,
    "sm_difference_khz": 0.0,
    "sm_difference_sigma_khz": 0.53,
    "splitting_residual_khz": 0.11,
    "rydberg_radius_correlation": 0.94,
    "experiment_correction_subtotal_khz": 1.74,
    "experiment_correction_subtotal_sigma_khz": 0.48
  },
  "tolerances": {
    "centroid_khz": 0.02,
    "splitting_khz": 0.02,
    "radius_fm": 5e-05,
    "sigma_fm": 5e-05,
    "radius_part_fm": 5e-05,
    "khz_two_places": 0.005
  },
  "publication": {
    "year": 2026,
    "date": "2026-02-11",
    "doi": "10.1038/s41586-026-10124-3"
  },
  "notice": "Components already include their experimental and recoil corrections. Apply only the stated centroid HFS correction here. The centroid and splitting errors are published inputs, not independent-component quadrature estimates."
}