Draw casing sitting using the following table. Use the top to bottom method and safety margin with $4$ pcf$.$

$\backslash$table$[[$DEPTH$($ft$.),\backslash$table$[[$pore$],[$pressure$],[$gradient$],[($pcf$)]],\backslash$table$[[$fracture$],[$pressure$],[$gradient $($pcf$)]]],[1000,66,90],[2000,66,95],[4000,66,105],[6000,66,114],[8000,66,120],[9000,66,123],[10000,70,125],[11000,87,130],[12000,111,135],[13000,121,136],[14000,123,139],[15000,125,139]]$