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Table VII
The highest correlation coefficient between residual chronology and the mean temperature of current (radial growth) or previous growing season (height growth) for years 1961–2003/2004. The start and end of the temperature period that yields the highest correlation coefficient is defined as months (MM), days (DD), or relative growing-degree-days (GDD%) and selected using a direct-search optimization.
| 150-year-old stand | 50-year-old stand | |||||
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| Radial growth | Height growth | Radial growth | Height growth | |||
| (std.err. 0.11) | std.err. 0.11) | (std.err. 0.09) | (std.err. 0.09) | |||
| MM | Corr. coeff. | 0.44 | 0.30 | 0.55 | 0.77 | |
| Month | July | July | July | July | ||
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| DD | Corr. coeff. | 0.50 | 0.45 | 0.61 | 0.85 | |
| From date | 28th June | 9th July | 27th June | 25th June | ||
| To date | 23th July | 25th July | 26th July | 12th Aug | ||
| Period length, days | 26 | 16 | 30 | 48 | ||
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| GDD% | Corr. coeff. | 0.56 | 0.44 | 0.61 | 0.86 | |
| From GDD% | 28 | 38 | 38 | 35 | ||
| To GDD% | 58 | 52 | 53 | 77 | ||
| Period length, GDD% | 30 | 14 | 14 | 42 | ||
| From average date | 26th June | 5th July | 5th July | 2th July | ||
| To average date | 20th July | 16th July | 16th July | 5th Aug | ||
| Average period length, days (std.dev.) | 25 (6.8) | 12 (3.7) | 12 (3.6) | 35 (11.4) | ||