{
 "file": "harvey1979.json",
 "kind": "transcription of printed tables",
 "what": "The 1979 Royal Greenwich Observatory remeasurement of the Sobral plates on a Zeiss Ascorecord: the displacement factor lambda and its standard error for every plate reduced (Table II, p.197), the results (Table III, p.198), and the facts of selection stated in the text.",
 "source": {
  "citation": "G. M. Harvey, \"Gravitational Deflection of Light: A re-examination of the observations of the solar eclipse of 1919\", The Observatory 99, 195 to 198 (1979 December). ADS bibcode 1979Obs....99..195H. Measurements by E. D. Clements; guidance of C. A. Murray (acknowledgements).",
  "bibcode": "1979Obs....99..195H",
  "scan_url": "https://articles.adsabs.harvard.edu/pdf/1979Obs....99..195H",
  "scan_sha256": "53d1864cf880a81002aca26bc195d5faeedbdf12037edd4216248a8b72faf31f",
  "scan_bytes": 105220,
  "retrieved": "2026-09-22",
  "licence": "Every page of the scan carries \"(c) The Observatory, Provided by the NASA Astrophysics Data System\". Only the printed numbers, with citation, are shipped; the scan is linked, not copied."
 },
 "pages": {
  "table_i": "p.196",
  "selection": "pp.196 to 197",
  "table_ii": "p.197",
  "table_iii_and_combination": "p.198"
 },
 "lambda_multiplier_arcsec": 1.75,
 "weight_rule": "Each value was assigned a weight equal to the reciprocal of the square of its standard error",
 "table_ii": {
  "four_inch": [
   {
    "plate": 1,
    "lambda": 1.08,
    "se": 0.16
   },
   {
    "plate": 4,
    "lambda": 1.15,
    "se": 0.25
   },
   {
    "plate": 5,
    "lambda": 1.11,
    "se": 0.09
   },
   {
    "plate": 7,
    "lambda": 0.85,
    "se": 0.21
   },
   {
    "plate": 8,
    "lambda": 1.12,
    "se": 0.11
   }
  ],
  "astrographic": [
   {
    "plate": 2,
    "lambda": 0.77,
    "se": 0.76
   },
   {
    "plate": 3,
    "lambda": 1.4,
    "se": 0.4
   },
   {
    "plate": 4,
    "lambda": 0.59,
    "se": 0.57
   },
   {
    "plate": 6,
    "lambda": 1.22,
    "se": 0.63
   },
   {
    "plate": 7,
    "lambda": 1.06,
    "se": 0.64
   },
   {
    "plate": 8,
    "lambda": 1.33,
    "se": 0.81
   },
   {
    "plate": 10,
    "lambda": 0.82,
    "se": 0.53
   },
   {
    "plate": 11,
    "lambda": 1.51,
    "se": 0.91
   },
   {
    "plate": 12,
    "lambda": -0.03,
    "se": 0.44
   }
  ]
 },
 "table_ii_printed_means": {
  "four_inch": {
   "lambda": 1.09,
   "se": 0.06
  },
  "astrographic": {
   "lambda": 0.88,
   "se": 0.19
  }
 },
 "table_iii": {
  "einstein": 1.75,
  "four_inch_dyson": {
   "value": 1.98,
   "err": 0.18
  },
  "four_inch_zeiss": {
   "value": 1.9,
   "err": 0.11
  },
  "astro_dyson": {
   "value": 0.93,
   "as_printed": "0\".93:"
  },
  "astro_zeiss": {
   "value": 1.55,
   "err": 0.34
  }
 },
 "combined_printed": {
  "value": 1.87,
  "err": 0.13
 },
 "table_i": {
  "astrographic": {
   "scale_arcsec_per_mm": 59.9,
   "max_images_in_field": 12,
   "useful_eclipse_plates": 16,
   "useful_comparison_plates": 17
  },
  "four_inch": {
   "scale_arcsec_per_mm": 35.9,
   "max_images_in_field": 7,
   "useful_eclipse_plates": 7,
   "useful_comparison_plates": 7
  }
 },
 "selection": {
  "measured": {
   "four_inch": {
    "eclipse": 5,
    "comparison": 5
   },
   "astrographic": {
    "eclipse": 16,
    "comparison": 12
   }
  },
  "reduced": {
   "four_inch": {
    "eclipse": 5,
    "comparison": 5
   },
   "astrographic": {
    "eclipse": 9,
    "comparison": 9
   }
  },
  "comparison_excluded_after_solution": 1,
  "nearest_star_excluded_on_astrographic_plates": [
   2,
   6,
   11
  ],
  "four_inch_eclipse_plates_missing": 1,
  "four_inch_eclipse_plates_broken": 1
 },
 "reference_as_printed": "F. W. Dyson, A. S. Eddington & C. Davidson, Mem. R.A.S., 62, 291, 1919."
}