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Table 5 Independent variables of the second stand age model

From: Predicting stand age in managed forests using National Forest Inventory field data and airborne laser scanning

  Estimate Standard error t-value P-value
Intercept 2.444 0.076 32.091 < 2e–16
f_b05 0.008 0.001 9.898 < 2e–16
l_b20 0.004 0.001 4.456 9.70e–06
mineral −0.977 0.109 −8.937 < 2e–16
sqrt (l_max × north) 0.306 0.044 6.963 7.68e–12
sqrt (l_max × mineral) 0.170 0.028 6.124 1.52e–09
sqrt (l_max × low) 0.303 0.019 16.228 < 2e–16
l_max × site1 −0.018 0.003 −6.218 8.67e–10
l_max × site2 −0.019 0.002 −11.508 < 2e–16
l_max × site3 −0.009 0.001 −6.400 2.85e–10
f_b95 × Lapland −0.012 0.002 −7.083 3.45e–12
l_avg × lat 1.37e–08 1.10e–09 12.460 < 2e–16
f_b05 × other −0.006 0.001 −7.843 1.65e–14
l_b70 × meanD 0.0007 2.94e–05 22.907 < 2e–16
almost natural 0.222 0.038 5.787 1.08e–08
sqrt (l_max × Juva) −0.035 0.007 −4.836 1.63e–06
f_b05 × Kuhmo −0.004 0.001 −5.334 1.30e–07