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Table I
Summary statistics for the tree data set.
| Mountain range (MR) | Variable | Mean | Std. dev. | Min. | Max. |
|---|---|---|---|---|---|
| 1 – Northern Iberian Range | No. of sections | 14.0 | 5.7 | 3 | 32 |
| D | 25.5 | 10.1 | 8.8 | 48.4 | |
| H | 15.9 | 4.9 | 8.0 | 26.5 | |
| h st | 0.12 | 0.05 | 0.04 | 0.35 | |
| 2 – Central Range | No. of sections | 12.8 | 8.8 | 1 | 43 |
| D | 27.9 | 12.9 | 5.2 | 64.0 | |
| H | 15.8 | 5.6 | 3.8 | 35.5 | |
| h st | 0.12 | 0.05 | 0.00 | 0.3 | |
| 3 – Galician Mountains | No. of sections | 10.4 | 2.8 | 3 | 20 |
| D | 22.8 | 5.7 | 8.7 | 36.5 | |
| H | 10.8 | 3.9 | 4.2 | 20.7 | |
| h st | 0.11 | 0.03 | 0.03 | 0.21 | |
| 4 – Southern Iberian Range | No. of sections | 8 | 4.2 | 1 | 16 |
| D | 15.7 | 7.5 | 5.3 | 45.4 | |
| H | 12.4 | 3.9 | 5.1 | 22.7 | |
| h st | 0.10 | 0.00 | 0.10 | 0.10 | |
| 5 – Soria and Burgos Mountains | No. of sections | 18.7 | 8.3 | 1 | 40 |
| D | 21.6 | 8.9 | 5.5 | 52.6 | |
| H | 15.4 | 5.1 | 5.8 | 31.7 | |
| h st | 0.10 | 0.00 | 0.10 | 0.10 | |
| 6 – Pyrenees | No. of sections | 9.8 | 2.8 | 1 | 16 |
| D | 20.0 | 6.3 | 7.6 | 42.8 | |
| H | 13.3 | 3.2 | 4.8 | 24.0 | |
| h st | 0.10 | 0.00 | 0.10 | 0.10 | |