Table 3 The effects of site types (A-E; see text and legend of Fig. 1) and rainfall during May–September on Gremmeniella abietina damage. Parameter estimates (and standard deviation), with the p values of the tests of significance of the term, of the linear predictor of the GLM (see Eq. 1 in the “Data analysis” section) fitted on different data sets

Intercept (α, effect of B)

−3.90 (0.49)

−6.61 (0.23)

−3.33 (0.48)

Difference of A to B (β_A)

0.64 (0.09) p < 0.001

0.50 (0.07) p < 0.001

−0.26 (0.25) p = 0.296

Difference of C to B (β_C)

−0.36 (0.08) p < 0.001

−0.43 (0.05) p < 0.001

0.21 (0.10) p < 0.044

Difference of D to B (β_D)

0.28 (0.20) p = 0.156

0.75 (0.06) p < 0.001

0.78 (0.17) p < 0.001

Difference of E to B (β_E)

−1.33 (0.28) p < 0.001

0.58 (0.04) p < 0.001

1.33 (0.09) p < 0.001

Effect of rainfall (γ)

0.006 (0.002) p < 0.001

0.01 (<0.001) p < 0.001

−0.003 (0.002) p = 0.120