Index: arms/js/pdServiceVersion/initd3chart.js
===================================================================
diff -u -r238a8ae1927bfcecc89f783b24b99e9679798992 -r4a930b4d0933b6c986c4f4eb9c581e8a7e2adabd
--- arms/js/pdServiceVersion/initd3chart.js	(.../initd3chart.js)	(revision 238a8ae1927bfcecc89f783b24b99e9679798992)
+++ arms/js/pdServiceVersion/initd3chart.js	(.../initd3chart.js)	(revision 4a930b4d0933b6c986c4f4eb9c581e8a7e2adabd)
@@ -107,7 +107,7 @@
 }
 
 // define the zoomListener which calls the zoom function on the "zoom" event constrained within the scaleExtents
-var zoomListener = d3.behavior.zoom().scaleExtent([0.1, 3]).on("zoom", zoom);
+var zoomListener = d3.behavior.zoom().scaleExtent([0.7, 2.5]).on("zoom", zoom);
 
 function initiateDrag(d, domNode) {
     draggingNode = d;