Table 6.

Statistics of the “check” standard quality-control metrics as presented in Fig. 6 for the three instrument types.

Instrument	δ18O precision [‰]	δ18O accuracy [‰]	δD precision [‰]	δD accuracy [‰]
L2120-i	0.065 ± 0.028	0.023 ± 0.059	0.524 ± 0.163	0.151 ± 0.232
L2130-i	0.031 ± 0.017	−0.001 ± 0.035	0.301 ± 0.098	0.034 ± 0.146
L2140-i	0.034 ± 0.015	−0.011 ± 0.033	0.390 ± 0.118	0.012 ± 0.172