Systeröd-PISY-1921-2006

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Systeröd-PISY-1921-2006 is a very short, resent pine collection from a stand in Systeröd in northestern Bohuslän in western Sweden 58°46′N 11°47′E, by Lars-Åke Larsson. The altitude is about 150 m a.s.l. It consists of measurements from 11 trees. At least four samples depth: 1946-2006. This collection may indicate that pine samples from this area probably are very difficult to date according to the lack of good references (Towards most references there are correlations just about 0.3). Best match is towards Södra Vi-PISY, an other short collection, from northeastern Småland about 265 km away is the best candidate with corr=0.49 (0.53 for the block 1946-2006).