Visnum-PISY-1795-2005

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Visnum-PISY-1795-2005 . A thin chronology from only three Pines (before 1845 only one!) growing on a sandy prehistoric grave field, surrounded by farmland, 800 m south of Visnum Church, Kristinehamns municipality, Värmland, near Lake Vänern. 59°7′22″N 14°10′32″E.

Towards other chronologies

Cybis CDendro, Algorithm: Proportion of last two years growth (2,0,T)
Correlations between available references and
Visnum-PISY (BLOCK:1845-2006)
dated to 2005
                    T-  Over
           Corr   Test   lap
Grangard   0,60   9,36   160  Grangärde, Dalarna                                      PISY
ESVEALAN   0,59   9,07   160  East Svealand Aneby+Askersu+Bettna+Sissham+Saltsjöba    PISY
swed308    0,54   7,90   153  Saltsjobaden                                            PISY
swed016    0,50   6,71   134  Glaskogen, Värmland (Schweingruber)                     PISY
Estonia    0,49   6,99   154  Estland, (proj. Extraterastrial)                        PISY
fletab2    0,49   5,87   110  norska data A.A0702                                     PISY
SödraDal   0,48   6,96   161  Södra Dalarna                                           PISY
swed310    0,48   6,73   153  Bettna, Södermanland                                    PISY
swed309    0,47   6,74   159  Aneby, Småland (Bredesta/Lysing)                        PISY
swed313    0,46   6,29   147  Rälla Tall, Högsrum sn, Öland                           PISY
Halmstad   0,46   6,49   161  Halmstad, Halland                                       PISY
swed302    0,46   6,26   151  NAMDO  1 Naemdoe Stockholm archipelago (Updated 2/2003) PISY
Prostpar   0,45   6,40   161  Prostparken in Svärdsjö, Dalarna                        PISY
Swed307    0,43   6,00   160  Lerbäck, Askersund                                      PISY
SolorNor   0,43   4,56    96  Solør, sydöstra. Norge (digitaliserat av Arne Andersson)PISY
SE003      0,41   5,56   154  Högelycke, Nybro (Extraterastrial SE003)                PISY

The 80 oldest years of two samples from one tree gives:

Cybis CDendro, Algorithm: Proportion of last two years growth (2,0,T)
Correlations between available references and
Vsm11ab (BLOCK:1795-1875) dated to 1875 
                    T-  Over
           Corr   Test   lap
se005      0,49   4,99    80  Gotland (Lunds Universitet, "extraterastrial")          PISY
BratPISY   0,45   4,45    80  Mälardalen area, publ. Bråthen                          PISY
Savolinn   0,44   4,30    80  Savonlinna-området. Sammanslagna från  ITRDB            PISY
Grangard   0,43   4,20    80  Grangärde, Dalarna                                      PISY
Estonia    0,43   4,18    80  Estland, (proj. Extraterastrial)                        PISY
swed308    0,43   3,81    67  Saltsjobaden                                            PISY
swed304    0,43   4,17    80  Sisshammar (T. Andreasson)                              PISY
Swed307    0,42   3,62    62  Lerbäck, Askersund                                      PISY
SE003      0,41   4,02    80  Högelycke, Nybro (Extraterastrial SE003)                PISY
swed016    0,39   3,76    80  Glaskogen, Värmland (Schweingruber)                     PISY
ESVEALAN   0,38   3,61    80  East Svealand Aneby+Askersu+Bettna+Sissham+Saltsjöba    PISY
swed309    0,38   3,58    80  Aneby, Småland (Bredesta/Lysing)                        PISY
swed022w   0,37   3,56    80  Gotland (Schweingruber)                                 PISY
swed302    0,37   3,54    80  NAMDO  1 Naemdoe Stockholm archipelago (Updated 2/2003) PISY
Prostpar   0,35   3,34    80  Prostparken in Svärdsjö, Dalarna                        PISY
se007      0,31   2,90    80  Dalarna region (Lunds Universitet, "extraterastrial")   PISY
swed310    0,30   2,34    57  Bettna, Södermanland                                    PISY

A combination of GrangärdePISY and SE005 (Gotland) gives corr=0.58 and TTest=6.23 at 80 years of overlap. This means that a (probably very good PISY) sample from the Visnum area of 80 years length may be possible to date towards other more or less distant references. If a few samples which correlates towards each other, the opportunities for a successful crossdating is good.

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