Table 3 Descriptive statistics for the eight groups of South American equids that were compared.
Groups | n | Mean δ13C | SD | Range | n | Mean δ18O | SD | Range |
|---|---|---|---|---|---|---|---|---|
(‰)PDB | (‰) | (‰) | (‰)V-SMOW | (‰) | (‰) | |||
A | 31 | -10.1 | 1.39 | -12.9 to -6.6 | 26 | 28.3 | 2.20 | 24.2 to 31.5 |
B | 68 | -5.2 | 4.83 | -11.66 to 9.21 | 68 | 28.5 | 3.32 | 21.7 to 34.9 |
C | 17 | -10.2 | 1.39 | -12.22 to -8.08 | 17 | 29.0 | 2.17 | 24.2 to 31.5 |
D | 14 | -10.0 | 1.44 | -12.9 to -6.6 | 9 | 27.0 | 1.74 | 25.3 to 29.8 |
E | 52 | -5.5 | 5.43 | -11.66 to 9.21 | 50 | 29.4 | 3.17 | 21.7 to 34.9 |
F | 16 | -4.3 | 1.61 | -8.31 to -2.3 | 16 | 25.3 | 1.28 | 23.5 to 28.3 |
G | 43 | -5.3 | 5.93 | -11.66 to 9.21 | 41 | 30.7 | 1.48 | 27 to 34.9 |
H | 25 | -5.1 | 1.85 | -9.86 to -2.3 | 25 | 24.6 | 1.51 | 21.7 to 28.3 |
I | 12 | -9.8 | 1.34 | -12.22 to -6.6 | 8 | 25.8 | 1.30 | 25.8 to28.7 |
J | 19 | -10.3 | 1.42 | -8.08 to -12.90 | 17 | 29.7 | 1.00 | 29.7 to 31.5 |