Table 2 Results of two test sets for validation; each line represents one sample; “observed” refers to the dendrochronological reference of the last tree ring measured by means of FTIR; “predicted mean” and “standard deviation” comprise the predictions of each measurement per sample.

From: MD dating: molecular decay (MD) in pinewood as a dating method

Location

Preservation conditions

Number of measurements

Observed

Predicted mean

Standard deviation

AUT

Living

11

2,002

1,994

34

AUT

Constr

6

1,688

1,716

31

NOR

Water

18

− 3,210

− 1,490

632

AUT

Living

16

1,966

1,872

79

AUT

Constr

4

1,788

1,661

72

FIN

Water

11

1,560

1,470

139

FIN

Water

7

1,387

1,300

327

FIN

Water

15

1,286

1,065

266

AUT

Constr

6

1,456

1,601

158

FIN

Water

9

− 2,202

− 2,494

1,239

AUT

Living

12

2,000

2,002

31

NOR

Dry

19

1,210

1,354

162

POL

Constr

10

1,596

1,626

112

AUT

Living

19

1,982

1,935

84

AUT

Living

10

1,920

1,580

312

NOR

Living

17

1,990

1,982

50