# condensed

Rows: 2. Files: condensed.csv, condensed.json (same rows).
Unit: per row, see the unit column.

Columns:
- value: measured value
- sigma: 1-sigma uncertainty, same unit
- source: publication (authors, journal, volume, page)
- year: year of publication
- field: field of measurement
- id: row id used on the Experiments page
- unit: unit of value and sigma
- quantity: what is measured
- grade: source grade (primary, secondary, recalled) and any published bound
- bound_low: lower end of a published bound, if the result is a bound
- bound_high: upper end of that bound
- recalled: yes: number taken from a secondary source, scored but not carried

Notes from the record:
- Jain et al. 1987 (Appl Phys Lett): two series-array Josephson standards differ by less than 2 parts in 10^17; entered as 0 +/- 1e-17 (the bound read as 2 sigma). Tsai, Jain, Lukens 1983 (PRL 51, 316, In vs Nb) is the two-material test; its exponent was cut in the fetched snippet, so the array number is the one entered.

Source of the data: the publications in the source column.

Licence: Values are numerical results quoted from the cited publications; the publications themselves remain under their publishers' copyright and licences, and the numbers are reproduced here for scholarly citation, each with its source. This compilation (the selection, the columns and the notes): licence to be set by the author; CC BY 4.0 proposed.

sha256 of condensed.csv: 959d27cb8c9f329c637edaa3669d89c625e44604e2374b6e1d77bd8cbc860dc6
Record file last written: 2026-11-07 20:12:55 IST.