Dendrochronology (cf Reimer et al. 2013, 1934)

a) Sample identifier (Dendro-Lab Key-code): ZH-644150
b) Sample certainly derives from a single tree (Y/N): Y
c) Site: Maur Muehlestr. 2, ZH, Switzerland 47°20′24.528″N 8°40′07.596″E
d) Object type: Beam in standing building
e) Preservation: Dry
f) Sample type (e.g. core or slice): slice
g) Species: Quercus sp.
h) No of rings:201
i) Pith (Y/N): Y
j) Bark (Y/N): N
k) Waney edge: Y
l) Sapwood (Y/N): Y
m) Methodology used for dating:
Dating was done by multiple comparisons of the time series in question with the regional master sequences. The series are first indexed using a Hollstein-transformation (Hollstein 1980, 14). Then the candidate for crossdating is tested in every possible synchronous position with each master chronology, using software DendroPlus (in-house software programmed by Ulrich Ruoff, version of 17.3.2014). For every position t-values and Gleichläufigkeits-percentages are noted. Those positions that produce results above a given threshold (defined individually) are noted in a table.
The date is determined by checking the possible synchronous positions in the table visually and by verifying that the context information as a priori-information do not rule out a given date. As re-use of older timber is common, context information are handled very conservatively and are mostly used as additional indication of possible problems.

n) Dated individually (Y/N)		: Y

Intra-site/phase cross-matching with (Lab-Keycodes, relative positions, Mean curve identifier):
NONE

Series	Ref	date	t	Glk%	over-lap	Notes	Public
644415	4657	1536	8.1	68.0	200	4657 = Master chronology of city of Zurich	No
644415	4120	1536	7.2	69.5	200	4120 = Master chronology of Canton Schaffhausen	No

o) Raw ring width series attached

Publicly deposited (Y/N): N

p) Remainder of sample is stored in which archive?
Competence center for underwaer archaeology and dendroarchaeology Zurich, Seefeldstr. 317, 8008 Zurich, CH.