Table 2. Summary statistics of the isotope results from tooth samples.

	δ13Ccoll v PDB	δ15Ncoll v AIR	δ13Cen v PDB	Δ13C spacing	86Sr/87Sr	δ18Oen
All sites
Mean	-19.9	10.8	-13.4	6.5	0.7101	-4.9
Std	0.6	0.7	1.2	1.2	0.0016	0.5
N	32	32	42	32	51	42
Bergrheinfeld
Mean	-19.7	10.6	-13.2	6.4	0.7097	-4.8
Std	0.4	0.7	0.6	0.8	0.0009	0.3
N	18	18	19	18	19	19
Wöllerspfad
Mean	-19.8	11.5	-12.9	7.3	0.7099	-5.2
Std	0.1	0.3	1.3	1.8	0.0014	0.5
N	7	7	16	7	25	16