Final [N/Fe] vs [C/Fe] anticorrelation we obtained for our targets. Magenta, yellow, green, cyan, and black symbols represents MS, SGB, RGB, HB, and AGB targets, respectively. Mean values for FG and SG stars are indicated with crosses surrounded by black circles. The horizontal line at [N/Fe]=+0.20 divides FG from SG targets. The inset shown the mean ridge lines for the N versus C anticorrelations of MS (magenta), SGB (yellow) and evolved (green) targets. Error-bar shows the typical errors (see text for more details).