Ar(t) · triton relative atomic mass

삼중수소핵의 상대 원자 질량

Takeaway

The relative standard uncertainty fell by a factor of about 25 from the 2006 to the 2022 edition (8.3×10⁻¹⁰ → 3.3×10⁻¹¹): the error bars narrowed that much.
Of 4 earlier editions with a measured value, 4 have the 2022 value outside ±1σ (the error bar) and 1 outside ±2σ (the bar doubled); the normal expectation is about 1 in 3 and 1 in 22.
The largest move between editions came in 2018→2022, at 1.5 times the combined standard uncertainty of the two editions (|z| = 1.5).

Unit: none (dimensionless)
Note: Sensitivity candidate. Listed in the NIST tables as 'triton mass in u' (from the 2006 edition).
M1: Half-life (years): 2.93 (1.45–∞)

Value ±1σ by edition2022

Relative deviation from the 2022 value (symmetric-log axis). Open circles: the error bar does not reach the 2022 value. Squares: exact.

Editionyear of the recommended values (data cut-off)	As printedexactly as in the source table; digits in parentheses are the standard uncertainty in the last digits	Standard uncertaintyhalf-width of the error bar (±1σ)	Relative standard uncertaintystandard uncertainty ÷ \|value\|: bar width relative to the value	z vs previous editionmove from the previous edition ÷ combined standard uncertainty of the two	z vs 2022(2022 value − this value) ÷ this edition's standard uncertainty	Source locationpage and table of the paper, or file and line of NIST's table
2006	3.015 500 7134(25)	2.5×10⁻⁹	8.3×10⁻¹⁰		1.0280	2006 ASCII:323
2010	3.015 500 7134	2.5×10⁻⁹	8.3×10⁻¹⁰	0.0000	1.0280	2010 ASCII:338
2014	3.015 500 716 32	1.1×10⁻¹⁰	3.6×10⁻¹¹	1.1669	−3.1818	2014 ASCII:338
2018	3.015 500 716 21	1.2×10⁻¹⁰	4.0×10⁻¹¹	−0.6757	−2.0000	2018 ASCII:353
2022	3.015 500 715 97	1.0×10⁻¹⁰	3.3×10⁻¹¹	−1.5364		2022 ASCII:354