{
  "source": "https://www.nature.com/articles/nature09250",
  "locator": "Abstract and equation (1), p. 213; measured transition energy, p. 215; new Rydberg constant, final discussion paragraph, p. 216",
  "observation": {
    "energy_meV": 206.2949,
    "sigma_meV": 0.0032
  },
  "model": {
    "constant_meV": 209.9779,
    "constant_sigma_meV": 0.0049,
    "quadratic_meV_fm2": -5.2262,
    "cubic_meV_fm3": 0.0347
  },
  "printed": {
    "radius_fm": 0.84184,
    "sigma_fm": 0.00067,
    "discrepancy_sigma": 5.0,
    "frequency_GHz": 49881.88,
    "frequency_sigma_GHz": 0.76,
    "rydberg_shift_khz": -110,
    "rydberg_shift_sigma": 4.9,
    "rydberg_per_m": "10973731.568160",
    "rydberg_u_per_m": "0.000016",
    "rydberg_precision_ratio": 4.6
  },
  "comparator": {
    "label": "CODATA 2006",
    "radius_fm": 0.8768,
    "sigma_fm": 0.0069
  },
  "rounding_half_units": {
    "energy": 5e-05,
    "constant": 5e-05,
    "rydberg_shift_khz": 0.5,
    "rydberg_shift_sigma": 0.05,
    "rydberg_precision_ratio": 0.05,
    "quadratic": 5e-05,
    "cubic": 5e-05,
    "experimental_sigma": 5e-05,
    "theory_sigma": 5e-05
  },
  "tolerances": {
    "radius_fm": 3e-05,
    "sigma_fm": 1.5e-05,
    "discrepancy_sigma": 0.05
  },
  "publication": {
    "year": 2010,
    "date": "2010-07-08",
    "doi": "10.1038/nature09250",
    "volume": 466,
    "issue": 7303,
    "pages": "213-216"
  }
}