Compilation of [El/FeI] trends as a function of age for the thick-disc stars. The continuous purple line represents the r-process dominated element Sm, which alone shows a slight trend, but with a quite low accuracy. The continuous blue line represents the s-process dominated element Y, which has a more noticeable trend than the others. The grey continuous lines are for elements with negligible trends of [El/FeI] vs. age. The continuous magenta line represents the [Mg/FeI] age correlation. The shadowed areas show the 95% confidence interval for the regressions. The vertical dashed line marks the solar age.