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Table 1 The number of observations (N), the mean age (\(\overline{{\varvec{X}} }\)), standard deviation (SD), minimal (min), and maximal (max) age in age classes of datasets used for calibration and verification of height growth models

From: Dynamic height growth models for highly productive pedunculate oak (Quercus robur L.) stands: explicit mapping of site index classification in Serbia

Calibration

Verification

Age class

N

\(\overline{X }(SD)\)

Min

Max

N

\(\overline{X }(SD)\)

Min

Max

(± 10) 20

153

24

3.91

15

30

93

24.81

3.25

19

30

40

251

41.2

5.68

31

50

155

43.77

4.68

31

50

60

252

61.03

5.43

51

70

226

59.81

4.59

51

70

80

257

81.18

5.77

71

90

244

83.35

5.20

71

90

100

301

100.05

5.62

91

110

366

99.81

5.27

91

109

120

258

121.11

5.28

111

130

262

120.81

4.78

112

130

140

261

140.11

5.44

131

149

206

140.95

4.98

131

149