Table 1.

Stable isotopic compositions including clumped isotope data of IAEA NBS-19 for reproducibility test. These samples were analysed during 2013–2014. The working gas (WG) used was AS-2 with δ¹³ C = -32.54 ‰ and δ¹⁸ O = -4.67 ‰ (in VPDB scale).

Sl. No.	δ13 C (‰) (VPDB)	δ18 O (‰) (VPDB)	δ47 (WG) (‰)	Std. Err.	Δ47 (‰) (ARF)	Std. Err
1	2.02	-2.21	35.22	0.01	0.382	0.010
2	2.02	-2.11	35.54	0.02	0.394	0.012
3	2.02	-2.19	35.28	0.01	0.416	0.010
4	2.01	-2.28	35.15	0.01	0.408	0.011
5	2.00	-2.27	35.24	0.02	0.388	0.016
6	2.00	-2.16	35.27	0.02	0.370	0.013
7	2.02	-2.27	35.21	0.01	0.398	0.009
8	2.02	-2.20	36.48	0.01	0.363	0.008
9	2.01	-2.20	36.56	0.02	0.392	0.006
10	2.01	-2.15	36.46	0.01	0.399	0.012
11	2.01	-2.20	36.57	0.01	0.393	0.010
12	2.02	-2.21	36.32	0.01	0.387	0.009
13	2.01	-2.18	36.43	0.01	0.368	0.014
14	2.01	-2.16	35.81	0.01	0.379	0.010
15	2.00	-2.18	35.76	0.01	0.387	0.006
Average	2.01	-2.20	35.82		0.388
Std. Dev.	0.01	0.05	0.58		0.014