a<p>- 2001 Census, Government of India, <a href="http://censusindia.gov.in/" target="_blank">http://censusindia.gov.in/</a>.</p>b<p>-1981 Indian Census.</p>c<p>-1931 Indian Census.</p>d<p>- Estimated census size.</p>e<p>-1901 Indian Census.</p>f<p>- All Brahmin-related castes in Tamil Nadu,</p>g<p>-No information available.</p>h<p>-Population code used in PCA & MDS plots,</p>i<p>-Sanskrit is the language of scriptures and ceremonies, but populations quickly adopted local cultures and languages.</p>j<p>-Lower, Middle & Higher social ranks are self-perceived/assigned classifications.</p>k<p>-Approximate coordinates.</p><p>NTN (North Tamil Nadu),TNV (Tirunelveli).</p><p>DR (Dravidian), IE (Indo-European).</p
