{
 "name": "physical-constants-metrics",
 "version": "1.2.1",
 "created": "2026-11-06",
 "licenses": [
  {
   "name": "CC-BY-4.0",
   "path": "https://creativecommons.org/licenses/by/4.0/"
  }
 ],
 "sources": [
  {
   "title": "CODATA recommended values (NIST)",
   "path": "https://physics.nist.gov/cuu/Constants/"
  },
  {
   "title": "Taylor, Parker & Langenberg 1969",
   "path": "https://physics.nist.gov/cuu/Constants/archive1969.html"
  },
  {
   "title": "Faerber & López-Corredoira 2020, Table A2 (CC BY 4.0)",
   "path": "https://doi.org/10.3390/universe6080114"
  },
  {
   "title": "Huchra, Estimates of the Hubble Constant (aggregates only)",
   "path": "https://www.cfa.harvard.edu/~huchra/hubble.plot.dat"
  }
 ],
 "resources": [
  {
   "path": "constants_long.csv",
   "description": "Constant × edition long table: value, standard uncertainty, relative uncertainty, unit, exact flag, printed form, source location",
   "format": "csv"
  },
  {
   "path": "quantity_map.csv",
   "description": "Map of the 31 quantities: symbol, names, source names by edition, exact-from edition, layer, basis of the Korean name",
   "format": "csv"
  },
  {
   "path": "m1_halflife.csv",
   "description": "M1 relative-uncertainty half-life",
   "format": "csv"
  },
  {
   "path": "m2_pairs.csv",
   "description": "M2 every consecutive-edition pair (z, z_old)",
   "format": "csv"
  },
  {
   "path": "m2_summary.csv",
   "description": "M2 exceedance rates and intervals",
   "format": "csv"
  },
  {
   "path": "m3_vs_latest.csv",
   "description": "M3 every (edition, constant) against 2022",
   "format": "csv"
  },
  {
   "path": "m3_summary.csv",
   "description": "M3 miss rates, interquartile and surprise indices by edition and group",
   "format": "csv"
  },
  {
   "path": "m4_tail.csv",
   "description": "M4 Student-t fits",
   "format": "csv"
  },
  {
   "path": "m5_funnel.csv",
   "description": "M5 convergence-plot data",
   "format": "csv"
  },
  {
   "path": "m6_events.csv",
   "description": "M6 exact-value transitions",
   "format": "csv"
  },
  {
   "path": "hf_repro.csv",
   "description": "Henrion & Fischhoff-style recalculation (five constants)",
   "format": "csv"
  },
  {
   "path": "sens_all_rows.csv",
   "description": "Sensitivity: every 1998–2022 ASCII row with an unchanged name",
   "format": "csv"
  },
  {
   "path": "sens_candidates.csv",
   "description": "Sensitivity: M2 and M3 recomputed with three candidates meeting the same rule added (20 constants)",
   "format": "csv"
  },
  {
   "path": "handcheck_mapped.csv",
   "description": "Check: every 1998–2022 row used here against NIST's PDF tables",
   "format": "csv"
  },
  {
   "path": "handcheck_early.csv",
   "description": "Check: every 1969/1973/1986 hand-entered value against page images and text layer",
   "format": "csv"
  },
  {
   "path": "aw_long.csv",
   "description": "Every atomic-weight revision, parsed (with pre-1961 values converted to the ¹²C scale). Atomic-weight values © IUPAC/CIAAW (not covered by CC BY 4.0): republication with full reference, ©, IUPAC or CIAAW and year; translations need prior approval from the relevant IUPAC National Adhering Organization; commercial use by arrangement with the CIAAW Secretariat. CC BY 4.0 covers only the editor's computations (z, aggregates, conversions).",
   "format": "csv"
  },
  {
   "path": "aw_a1_elements.csv",
   "description": "Revisions, first/last year and mean spacing per element (A1, A4). Atomic-weight values © IUPAC/CIAAW (not covered by CC BY 4.0): republication with full reference, ©, IUPAC or CIAAW and year; translations need prior approval from the relevant IUPAC National Adhering Organization; commercial use by arrangement with the CIAAW Secretariat. CC BY 4.0 covers only the editor's computations (z, aggregates, conversions).",
   "format": "csv"
  },
  {
   "path": "aw_a1_eras.csv",
   "description": "Revisions per era (A1). Atomic-weight values © IUPAC/CIAAW (not covered by CC BY 4.0): republication with full reference, ©, IUPAC or CIAAW and year; translations need prior approval from the relevant IUPAC National Adhering Organization; commercial use by arrangement with the CIAAW Secretariat. CC BY 4.0 covers only the editor's computations (z, aggregates, conversions).",
   "format": "csv"
  },
  {
   "path": "aw_a2_pairs.csv",
   "description": "Every revision whose predecessor had an uncertainty: outside range, overlap, z (A2, A3). Atomic-weight values © IUPAC/CIAAW (not covered by CC BY 4.0): republication with full reference, ©, IUPAC or CIAAW and year; translations need prior approval from the relevant IUPAC National Adhering Organization; commercial use by arrangement with the CIAAW Secretariat. CC BY 4.0 covers only the editor's computations (z, aggregates, conversions).",
   "format": "csv"
  },
  {
   "path": "aw_a5_intervals.csv",
   "description": "Switches to interval notation (A5). Atomic-weight values © IUPAC/CIAAW (not covered by CC BY 4.0): republication with full reference, ©, IUPAC or CIAAW and year; translations need prior approval from the relevant IUPAC National Adhering Organization; commercial use by arrangement with the CIAAW Secretariat. CC BY 4.0 covers only the editor's computations (z, aggregates, conversions).",
   "format": "csv"
  },
  {
   "path": "h0_faerber2020.csv",
   "description": "Every row of Table A2 of Faerber & López-Corredoira (2020): year, H0, error as printed, reference (CC BY 4.0, with attribution). Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_h3_rows_faerber.csv",
   "description": "z against both references for every Table A2 row (H3). Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_h1_halflife.csv",
   "description": "H1 precision half-life by series, start year and variant. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_h3_summary.csv",
   "description": "H3 miss rates, interquartile and surprise indices with 95% intervals, by series and reference. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_h4_tail.csv",
   "description": "H4 Student-t fits by series and reference. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_huchra_yearly.csv",
   "description": "Huchra's list by year: count, quartiles of H0 and of the relative error (years with fewer than three rows: count only). Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_huchra_decades.csv",
   "description": "Huchra's list by decade: count, quartiles of H0. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_huchra_types.csv",
   "description": "Huchra's list: rows per decade and type code. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  },
  {
   "path": "h0_huchra_codes.csv",
   "description": "Huchra's list: rows, first and last year per type code. Table A2 values © the authors, CC BY 4.0 (Faerber & López-Corredoira 2020, Universe 6, 114). Huchra's list (hubble.plot.dat) grants no right to republish: these files hold aggregates only (counts, quartiles, metrics), never a row of the list. CC BY 4.0 covers the editor's computations.",
   "format": "csv"
  }
 ]
}