diff --git a/docs/assets/uncertainty/uncertainty.js b/docs/assets/uncertainty/uncertainty.js
index 52f9341..fdc7a26 100644
--- a/docs/assets/uncertainty/uncertainty.js
+++ b/docs/assets/uncertainty/uncertainty.js
@@ -4,8 +4,8 @@ const ys = [];
 function addPoint(e) {
     const click_box = document.getElementById("click_box");
     var rect = click_box.getBoundingClientRect();
-    var x = (e.clientX - rect.left - 6) / rect.width * 100;
-    var y = (e.clientY - rect.top - 6) / rect.width * 100;
+    var x = (e.clientX - rect.left - 5) / rect.width * 100;
+    var y = (e.clientY - rect.top - 5) / rect.width * 100;
 
     xs.push(x);
     ys.push(y);
@@ -53,18 +53,21 @@ function updateCentre() {
     var dx = Math.pow(x_square_sum, 0.5) / xs.length
     var dy = Math.pow(y_square_sum, 0.5) / ys.length
 
+    const display_box = document.getElementById("display_box");
+    var rect = display_box.getBoundingClientRect();
+
     const xbar = document.getElementById("xbar");
     const ybar = document.getElementById("ybar");
 
-    xbar.x1.baseVal.value = x - dx;
-    xbar.x2.baseVal.value = x + dx;
-    xbar.y1.baseVal.value = y;
-    xbar.y2.baseVal.value = y;
+    xbar.x1.baseVal.value = x - dx + 5 / rect.width * 100;
+    xbar.x2.baseVal.value = x + dx + 5 / rect.width * 100;
+    xbar.y1.baseVal.value = y + 5 / rect.width * 100;
+    xbar.y2.baseVal.value = y + 5 / rect.width * 100;
 
-    ybar.x1.baseVal.value = x;
-    ybar.x2.baseVal.value = x;
-    ybar.y1.baseVal.value = y - dy;
-    ybar.y2.baseVal.value = y + dy;
+    ybar.x1.baseVal.value = x + 5 / rect.width * 100;
+    ybar.x2.baseVal.value = x + 5 / rect.width * 100;
+    ybar.y1.baseVal.value = y - dy + 5 / rect.width * 100;
+    ybar.y2.baseVal.value = y + dy + 5 / rect.width * 100;
 
     const meanpoint = document.getElementById("mean_point");
     meanpoint.style.left = x + "%";