Table 2 Statistics of tree ring chronologies from Huelva (El Portil, Campo Común, Moguer, Hinojos, Punta Umbría and Valverde del Camino), Pegões and La Mancha (Pinar Viejo, Dehesa del Peral and La Pasadilla). Time-spans include at least 5 cross-dated series with Expressed Population Signal > 0.85 (see text for details)

Time span (years)

1952–2011 (60)

1945–2012 (68)

1946–2012 (67)

1866–2012 (147)

1902–2011 (110)

1881–2011 (131)

1958–2007 (50)

1906–1999 (94)

1899–2001 (103)

1919–2001 (83)

No. of trees (no. of cores)

20 (40)

17 (34)

17 (34)

19 (38)

17 (34)

20 (40)

24^a

13^b

21^b

26^b

Mean width (mm)

2.4

3.7

2.7

2.1

1.4

1.8

3.2

1.4

2.0

2.5

Median width (mm)

2

3

2.2

1.7

1.2

1.4

2.3

1.0

1.7

2.1

Standard deviation (mm)

1.5

2.3

1.9

1.5

0.8

1.3

2.5

1.2

1.1

1.6

Mean sensitivity

0.28

0.20

0.32

0.37

0.28

0.23

0.26

0.36

0.24

0.30

 Raw series

0.68

0.73

0.54

0.68

0.67

0.79

0.77

0.77

0.77

0.72

 After standardization

0.007

0.013

0.024

0.034

0.066

0.052

0.027

0.036

0.020

0.040

 Series vs. master chronology

0.64

0.52

0.68

0.70

0.70

0.69

0.69

0.65

0.63

0.65

 Among series

0.37

0.36

0.55

0.48

0.40

0.49

0.77

0.54

0.45

0.41