Reference library

Library
Load custom / regional master
Drop dated series or a chronology to add a master
Raw series averaged (r̄, depth, EPS); .crn / TRiDaS chronologies loaded as published
Build chronology from specimens
Needs at least two dated specimens in the workspace (date them on the cross-dating canvas or import raw series).
Demonstration data. Masters tagged DEMO are synthetic chronologies so the workbench functions offline. Masters tagged ITRDB are re-indexed from real NOAA ITRDB raw measurements (single-site chronologies, not regional masters). Use licensed regional references for formal dating; search more under the NOAA ITRDB and DANS / DCCD tabs.
Central European Oak
700 CE–2005 CE
Species
Quercus robur / petraea
Region
S. Germany · Upper Rhine · Main
Span
1306 years
Max depth
51
r̄ (inter-series)
0.42
Replicated from
738 CE
EPS ≥ 0.85 & n ≥ 10
94% of years
SSS ≥ 0.85
96% of years
Built with
31-yr index · mean (bundled)
Chronology index (red bands: exploratory — EPS < 0.85 or depth < 10)
800100012001400160018002000
Sample depth (number of series)
800100012001400160018002000
Expressed Population Signal · EPS = N·r̄ / (1 + (N−1)·r̄) · constant r̄
800100012001400160018002000
0.85
Subsample Signal Strength · SSS = n(1 + (N−1)r̄) / (N(1 + (n−1)r̄)), N = 51 (max depth) · threshold 0.85
800100012001400160018002000
0.85
Running mean sensitivity (dplR sens1, 50-yr centred window) · overall ms 0.230
800100012001400160018002000
Provenance
Synthetic demonstration master modelled on Hollstein-type regional oak chronologies
Centroid: 49.50°N, 9.00°E
Ring-width units: dimensionless index (mean ≈ 100)