Data
- 29 derived CSV files and datapackage.json can be downloaded; the editor's computations are CC BY 4.0 (atomic-weight values themselves follow IUPAC/CIAAW's conditions; the Table A2 values of the Hubble chapter carry their CC BY 4.0 attribution).
- Neither NIST's original files nor Huchra's list is included; the NIST files can be fetched again from their URLs, dates and hashes, and Huchra's list appears only in aggregate.
The derived tables below are CC BY 4.0. The underlying values were taken from the CODATA recommended values published by NIST and from the 1969 paper's table; every row records its source location. NIST's original files (ASCII tables, PDFs) are not included: NIST states that its Standard Reference Data may not be reproduced without prior permission. Their URLs, retrieval dates and SHA-256 hashes are in raw_manifest.json.
| File | Contents |
|---|---|
| constants_long.csv | Constant × edition long table: value, standard uncertainty, relative uncertainty, unit, exact flag, printed form, source location |
| quantity_map.csv | Map of the 31 quantities: symbol, names, source names by edition, exact-from edition, layer, basis of the Korean name |
| m1_halflife.csv | M1 relative-uncertainty half-life |
| m2_pairs.csv | M2 every consecutive-edition pair (z, z_old) |
| m2_summary.csv | M2 exceedance rates and intervals |
| m3_vs_latest.csv | M3 every (edition, constant) against 2022 |
| m3_summary.csv | M3 miss rates, interquartile and surprise indices by edition and group |
| m4_tail.csv | M4 Student-t fits |
| m5_funnel.csv | M5 convergence-plot data |
| m6_events.csv | M6 exact-value transitions |
| hf_repro.csv | Henrion & Fischhoff-style recalculation (five constants) |
| sens_all_rows.csv | Sensitivity: every 1998–2022 ASCII row with an unchanged name |
| sens_candidates.csv | Sensitivity: M2 and M3 recomputed with three candidates meeting the same rule added (20 constants) |
| handcheck_mapped.csv | Check: every 1998–2022 row used here against NIST's PDF tables |
| handcheck_early.csv | Check: every 1969/1973/1986 hand-entered value against page images and text layer |
Atomic-weights chapter
Atomic-weight values are taken from CIAAW's table of historical standard atomic weights. CIAAW and IUPAC permit republication without formal permission provided the full reference, the © symbol, the name IUPAC or CIAAW and the year are prominently visible. Publication of a translation requires prior approval from the relevant IUPAC National Adhering Organization, and commercial use requires contacting the CIAAW Secretariat. This site reproduces only the atomic-weight values (numbers) and their printed notation and writes its own explanations. Rights and conditions for the atomic-weight values remain with CIAAW/IUPAC; the site's CC BY 4.0 covers only the editor's computations (z, aggregates, conversions). Source: Standard atomic weights © IUPAC/CIAAW 2016–2024. Commission on Isotopic Abundances and Atomic Weights, Historical changes of standard atomic weights (compiled by J. Meija), https://www.ciaaw.org/historical-atomic-weights.htm
| File | Contents |
|---|---|
| aw_long.csv | Every atomic-weight revision, parsed (with pre-1961 values converted to the ¹²C scale) |
| aw_a1_elements.csv | Revisions, first/last year and mean spacing per element (A1, A4) |
| aw_a1_eras.csv | Revisions per era (A1) |
| aw_a2_pairs.csv | Every revision whose predecessor had an uncertainty: outside range, overlap, z (A2, A3) |
| aw_a5_intervals.csv | Switches to interval notation (A5) |
Hubble-constant chapter
The Table A2 values are taken from the appendix table of Faerber & López-Corredoira (2020), Universe 6, 114 (CC BY 4.0; read from arXiv:2008.04035v1 and checked against the published table, all 164 rows); the row-level CSV carries the attribution. Huchra's list (hubble.plot.dat) carries a copyright line and a request for citation but no grant to republish, so only aggregates are published: counts and quartiles by year and decade, counts by code, and the metrics. No row values, no chart of individual estimates and no row-level pairing of the two compilations are published, and the original file is not in the public repository. The site's CC BY 4.0 covers the editor's computations (z, aggregates, half-lives, fits). Sources: J. Huchra, Estimates of the Hubble Constant (hubble.plot.dat, last updated 2010-10-07), Harvard-Smithsonian Center for Astrophysics; assembled as part of the NASA/HST Key Project on the Extragalactic Distance Scale. Aggregates only. · Faerber, T.; López-Corredoira, M. A Chi-Squared Analysis of the Measurements of Two Cosmological Parameters over Time. Universe 2020, 6, 114, doi:10.3390/universe6080114, Appendix Table A2 (read from arXiv:2008.04035v1). CC BY 4.0.
| File | Contents |
|---|---|
| h0_faerber2020.csv | Every row of Table A2 of Faerber & López-Corredoira (2020): year, H0, error as printed, reference (CC BY 4.0, with attribution) |
| h0_h3_rows_faerber.csv | z against both references for every Table A2 row (H3) |
| h0_h1_halflife.csv | H1 precision half-life by series, start year and variant |
| h0_h3_summary.csv | H3 miss rates, interquartile and surprise indices with 95% intervals, by series and reference |
| h0_h4_tail.csv | H4 Student-t fits by series and reference |
| h0_huchra_yearly.csv | Huchra's list by year: count, quartiles of H0 and of the relative error (years with fewer than three rows: count only) |
| h0_huchra_decades.csv | Huchra's list by decade: count, quartiles of H0 |
| h0_huchra_types.csv | Huchra's list: rows per decade and type code |
| h0_huchra_codes.csv | Huchra's list: rows, first and last year per type code |