Table 3 Comparison between the spatial assignment of the endmembers from the ⁸⁷Sr/⁸⁶Sr intra-tooth profiles of the M₂ and M₃ from 5 Western Arctic herd caribou assessed from solution analysis and LA-MC-ICP-MS analysis.

Individual	Molar	Sample	Season	Solution			LA-MC-ICP-MS			Overlap (%)
Individual	Molar	Sample	Season	Odd ratio	95% CI	Assigned range	Odd ratio	95% CI	Assigned range	Overlap (%)
WACH.0.120	M₂	OS	Summer	0.23	0.225–0.235	Winter	0.24	0.232–0.242	Winter	0.99
	M₂	ERJ	Winter	0.20	0.195–0.204	Winter	0.27	0.265–0.276	Winter	0.91
	M₃	OS	Winter	0.17	0.17–0.178	Winter	0.20	0.195–0.204	Winter	0.98
	M₃	ERJ	Summer	0.20	0.195–0.204	Winter	0.22	0.211–0.221	Winter	0.98
WACH.153.180	M₂	OS	Summer	1.63	1.599–1.658	Summer	1.58	1.553–1.611	Summer	0.00
	M₂	ERJ	Winter	0.70	0.685–0.711	Winter	0.46	0.45–0.468	Winter	0.73
	M₃	OS	Winter	0.54	0.533–0.554	Winter	0.12	0.121–0.128	Winter	0.55
	M₃	ERJ	Summer	0.98	0.959–0.995	Winter	0.70	0.685–0.711	Winter	0.53
WACH.2.210	M₂	OS	Summer	1.46	1.435–1.488	Summer	1.49	1.466–1.521	Summer	0.90
	M₂	ERJ	Winter	0.97	0.953–0.989	Winter	0.99	0.972–1.009	NS	0.97
	M₃	OS	Winter	1.37	1.343–1.393	Summer	1.36	1.338–1.388	Summer	0.99
	M₃	ERJ	Summer	1.79	1.758–1.824	Summer	1.81	1.779–1.844	Summer	0.42
WACH.2.230	M₂	OS	Summer	1.17	1.148–1.191	Summer	1.69	1.657–1.719	summer	0.00
	M₂	ERJ	Winter	0.20	0.195–0.204	Winter	0.25	0.247–0.259	Winter	0.94
	M₃	OS	Winter	0.31	0.303–0.315	Winter	0.22	0.218–0.229	Winter	0.87
	M₃	ERJ	Summer	1.17	1.148–1.191	Summer	1.82	1.786–1.852	Summer	0.00
WACH.2000	M₂	OS	Summer	1.46	1.435–1.488	Summer	1.30	1.28–1.328	Summer	0.66
	M₂	ERJ	Winter	0.78	0.77–0.799	Winter	0.71	0.697–0.724	Winter	0.91
	M₃	OS	Winter	1.81	1.782–1.848	Summer	1.65	1.62–1.68	Summer	0.30
	M₃	ERJ	Summer	1.69	1.663–1.725	Summer	1.72	1.685–1.748	Summer	0.93

The likelihood of each sample to originate from either the winter or summer range was estimated from odd ratio (probability of assignment summer range/probability of assignment winter range), samples with an odd ratio > 1 being more likely to come from the summer range. Overlap (%) between the areas corresponding to 20% of the study area with the highest posterior probability assessed from the two sampling methods are provided. OS: occlusal surface, ERJ: enamel-root junction.

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