In the best position of the American dendrochronology (Douglas fir, alpine and yellow pine), but this region is deleted from the areas of "classical antiquity". In addition, the method is largely conditional, as is always the number of significant unrecorded factors: local climatic conditions of the period of years, the composition of soil moisture fluctuation of local, terrain, etc. All of these effects strongly affect the thickness of the rings graphics , p.100 ... 101, 103. Moreover, the initial construction of dendrochronological scales (by "stitching" the individual charts) was performed on the basis of already existing Scaliger chronology , p.105. Therefore, any change in the relative chronology of the written sources and automatically change the dendrochronological scale.