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Table 4

Example 3 results (FAC-1, 4 systems).

system ▾ Bias average (nm) (Bav %)* Confidence** interval (nm) [UCL; LCL] Tstat⁑ {Eq. (25)} Bav accepted by statzero? {condn. (25)} Uovrlp) {Eq. (28)} Bav accepted by statzero proxy? {criterion (29)}
A –0.47 (0.09%) 0.12; −1.05 1.70 Yes
B –0.73 (0.15%) –0.16; −1.31 2.75 No 100% Yes
C –4.33 (0.86%) –3.48; −5.19 10.9 No 31% Yes
D –4.47 (0.89%) –3.61; −5.33 11.1 No 23% No

*Bav % as percentage of the consensus reference value 502 nm.

**Calculated by equation (26).

⁋Gage resolution ρ  = 0.5 nm.

§Gage calibration uncertainty tolerance Ug = 1.0 nm.

⁑Tcrit(α/2, m ̶ 1) = 2.14 (α = 0.05, m = 15).

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