Table 3.

Measurement uncertainty calculation results for simulation experiment 2

Calculation interval	Number of replicate series in 0–5-FNU range	Reproducibility within-laboratory uRw (FNU)	Method and laboratory bias ub (FNU)	Expanded measurement uncertainty for the 0–5-FNU range expressed in FNU (k = 2)	Number of replicate series in 5–40-FNU range	Reproducibility within-laboratory uRw% (%)	Method and laboratory bias ub (%)	Expanded measurement uncertainty for the 5–40-FNU range expressed in % (k = 2)
28 Mar–4 Apr 2018	33	0.33	0.13	0.71	121	2.4	5.3	11.7
4 Apr–11 Apr 2018	0	–	–	–	161	5.1	5	14.3
11 Apr–18 Apr 2018	32	0.59	0.85	2.08	129	5.6	2.5	12.3
18 Apr–25 Apr 2018	29	0.42	0.17	0.91	132	5.8	2.2	12.3
25 Apr–2 Apr 2018	51	0.41	0.11	0.84	109	8.4	6.5	21.3