diff --git a/html/calibration.htm b/html/calibration.htm
index 57a6999..a4ee866 100644
--- a/html/calibration.htm
+++ b/html/calibration.htm
@@ -274,6 +274,10 @@
   function populateChartForm(a, g) {
     if( a != 0)
       chartDataForm.push( { x: parseFloat(a), y: parseFloat(g) });
+
+    chartDataForm.sort(function (a, b) {
+      return a.x - b.x;
+    });      
   }
 
   function populateChartCalc(a, g) {
diff --git a/test/formula.json b/test/formula.json
index fd53a8b..a8e095a 100644
--- a/test/formula.json
+++ b/test/formula.json
@@ -2,13 +2,13 @@
     "gravity-formula": "0.00000166*tilt^3+-0.00024799*tilt^2+0.01344400*tilt+0.79358248",
     "angle": 45,
     "a1": 25,
-    "a2": 35,
-    "a3": 45,
+    "a3": 35,
+    "a2": 45,
     "a4": 55,
     "a5": 65,
     "g1": 1.000,
-    "g2": 1.010,
-    "g3": 1.025,
+    "g3": 1.010,
+    "g2": 1.025,
     "g4": 1.040,
     "g5": 1.060
 }
\ No newline at end of file