-with-special-data-sets/LAGRANGIAN-DATA.html" class="sf-depth-4">8.6 LAGRANGIAN DATA</a></li><li id="menu-1291-1" class="middle odd sf-item-7 sf-depth-4 sf-no-children"><a href="../working-with-special-data-sets/SIGMA-COORDINATE-DATA.html" class="sf-depth-4">8.7 SIGMA COORDINATE DATA</a></li><li id="menu-1292-1" class="middle even sf-item-8 sf-depth-4 sf-no-children"><a href="../working-with-special-data-sets/CURVILINEAR-COORDINATE-DATA.html" class="sf-depth-4">8.8 CURVILINEAR COORDINATE DATA</a></li><li id