Estimates of directional and non-linear selection gradients for the three Blue tit populations with their 95% confidence intervals.

In bold are the estimates significantly different from zero. || β || is the norm of the directional selection gradient. Note that the quadratic coefficients are not doubled in this table.以粗体标注的为与零存在显著差异的估计值。|| β || 为定向选择梯度的范数。请注意，本表中二次系数未做加倍处理。