diff --git a/MP.Data/chartJsData.cs b/MP.Data/chartJsData.cs
index def8c7b4..22200552 100644
--- a/MP.Data/chartJsData.cs
+++ b/MP.Data/chartJsData.cs
@@ -11,7 +11,7 @@ namespace MP.Data
             #region Public Properties
 
             public DateTime x { get; set; }
-            public decimal y { get; set; }
+            public double y { get; set; }
 
             #endregion Public Properties
         }
@@ -20,8 +20,8 @@ namespace MP.Data
         {
             #region Public Properties
 
-            public decimal x { get; set; }
-            public decimal y { get; set; }
+            public double x { get; set; }
+            public double y { get; set; }
 
             #endregion Public Properties
         }
diff --git a/MP.Stats/MP.Stats.csproj b/MP.Stats/MP.Stats.csproj
index 7011200b..ed929293 100644
--- a/MP.Stats/MP.Stats.csproj
+++ b/MP.Stats/MP.Stats.csproj
@@ -4,7 +4,7 @@
         <TargetFramework>net6.0</TargetFramework>
         <RootNamespace>MP.Stats</RootNamespace>
         <UserSecretsId>826e877c-ba70-4253-84cb-d0b1cafd4440</UserSecretsId>
-        <Version>6.14.2202.2412</Version>
+        <Version>6.14.2202.2511</Version>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/MP.Stats/Pages/Test.razor b/MP.Stats/Pages/Test.razor
index 7877bfbe..181bc912 100644
--- a/MP.Stats/Pages/Test.razor
+++ b/MP.Stats/Pages/Test.razor
@@ -12,15 +12,15 @@
                 <div class="input-group-prepend">
                     <label class="input-group-text"># punti</label>
                 </div>
-                <input class="form-control form-control-sm" @bind="@numRec" placeholder="# punti da simulare" />
+                <input class="form-control form-control-sm" @bind="@numRec" placeholder="# punti da simulare" type="number" />
                 <div class="input-group-prepend">
                     <label class="input-group-text">media</label>
                 </div>
-                <input class="form-control form-control-sm" @bind="@mean" placeholder="valore media" />
+                <input class="form-control form-control-sm" @bind="@mean" placeholder="valore media" type="number" />
                 <div class="input-group-prepend">
                     <label class="input-group-text">std dev</label>
                 </div>
-                <input class="form-control form-control-sm" @bind="@stdDev" placeholder="deviazione standard" />
+                <input class="form-control form-control-sm" @bind="@stdDev" placeholder="deviazione standard" type="number" />
                 <div class="input-group-append">
                     <button class="btn btn-info btn-sm" @onclick="@(async () => await HandleRedraw())">Redraw</button>
                 </div>
@@ -44,13 +44,13 @@
         <BarChart @ref="barChart" TItem="double" OptionsObject="horizontalLineChartOptions" />
         </div>*@
     <div class="col-6">
-        <BarPlot Id="TestBar" Data="@histData" Labels="@histLabel" lineColor="rgb(7, 173, 236)" backColor="rgba(107, 223, 255, 0.5)" Legenda="Freq. Osservate"></BarPlot>
+        <BarPlot Id="TestBar" Data="@histGroupData" Labels="@histGroupLabel" lineColor="rgb(7, 173, 236)" backColor="rgba(107, 223, 255, 0.5)" Legenda="Freq. Osservate"></BarPlot>
     </div>
     <div class="col-6">
         <StepLine Id="TestTS" DataTS="@dataList" lineColor="rgb(7, 173, 236)" backColor="rgba(107, 223, 255, 0.3)"></StepLine>
     </div>
     <div class="col-6">
-        <BarPlot Id="TestBarHor" Horizontal="true" Data="@histData" Labels="@histLabel" lineColor="rgb(7, 173, 236)" backColor="rgba(107, 223, 255, 0.5)" Legenda="Freq. Osservate"></BarPlot>
+        <BarPlot Id="TestBarHor" Horizontal="true" Data="@histGroupData" Labels="@histGroupLabel" lineColor="rgb(7, 173, 236)" backColor="rgba(107, 223, 255, 0.5)" Legenda="Freq. Osservate"></BarPlot>
     </div>
 </div>
 
diff --git a/MP.Stats/Pages/Test.razor.cs b/MP.Stats/Pages/Test.razor.cs
index f625f32d..babb3977 100644
--- a/MP.Stats/Pages/Test.razor.cs
+++ b/MP.Stats/Pages/Test.razor.cs
@@ -24,7 +24,9 @@ namespace MP.Stats.Pages
 
         public int numRec
         {
-            get { return _numRec; 
+            get
+            {
+                return _numRec;
             }
             set
             {
@@ -148,6 +150,20 @@ namespace MP.Stats.Pages
             histData = histDict.Values.ToArray();
             histLabel = histDict.Keys.Select(x => $"{x}").ToArray();
 
+            // calcolo i valori raggruppati in numGroup...
+            int numGroup = (int)Math.Sqrt(numRec);
+            double minVal = rawData.Min();
+            double maxVal = rawData.Max();
+            double step = (maxVal - minVal) / numGroup;
+            var histDictGroup = rawData.GroupBy(r => ((int)Math.Round((r - minVal) / step)) * step + minVal).Select(g => new
+            {
+                g.Key,
+                Count = g.Count()
+            }).OrderBy(d => d.Key).ToDictionary(x => x.Key, x => x.Count.ToString());
+            histGroupData = histDictGroup.Values.ToArray();
+            histGroupLabel = histDictGroup.Keys.Select(x => $"{x:N2}").ToArray();
+
+
 
             dataList = TSData(DateTime.Today.AddHours(-rawData.Count), rawData).Select(r => new chartJsData.chartJsTSerie()
             { x = r.Key, y = r.Value }).ToList();
@@ -156,6 +172,10 @@ namespace MP.Stats.Pages
         protected string[]? histData { get; set; } = null;
 
         protected string[]? histLabel { get; set; } = null;
+
+        protected string[]? histGroupData { get; set; } = null;
+
+        protected string[]? histGroupLabel { get; set; } = null;
         protected List<chartJsData.chartJsTSerie>? dataList { get; set; } = null;
 #if false
 
@@ -186,12 +206,12 @@ namespace MP.Stats.Pages
         List<string> borderColors = new List<string> { ChartColor.FromRgba(255, 99, 132, 1f), ChartColor.FromRgba(54, 162, 235, 1f), ChartColor.FromRgba(255, 206, 86, 1f), ChartColor.FromRgba(75, 192, 192, 1f), ChartColor.FromRgba(153, 102, 255, 1f), ChartColor.FromRgba(255, 159, 64, 1f) }; 
 #endif
 
-        private List<int> RandomizeData()
+        private List<double> RandomizeData()
         {
             var r = new Random(DateTime.Now.Millisecond);
 
 
-            List<int> answ = new List<int>();
+            List<double> answ = new List<double>();
             for (int i = 0; i < numRec; i++)
             {
                 double u1 = 1.0 - r.NextDouble(); // uniform (0,1] random doubles
@@ -199,14 +219,14 @@ namespace MP.Stats.Pages
                 double randStdNormal = Math.Sqrt(-2.0 * Math.Log(u1)) * Math.Sin(2.0 * Math.PI * u2);
                 double randNormal = mean + stdDev * randStdNormal; // random normal (mean, stdDev^2) 
                 //answ.Add(r.Next(3, 30) * r.NextDouble());
-                answ.Add((int)(randNormal * 10));
+                answ.Add(randNormal);
             }
             return answ;
         }
 
-        private Dictionary<DateTime, decimal> TSData(DateTime inizio, List<int> yData)
+        private Dictionary<DateTime, double> TSData(DateTime inizio, List<double> yData)
         {
-            Dictionary<DateTime, decimal> answ = new Dictionary<DateTime, decimal>();
+            Dictionary<DateTime, double> answ = new Dictionary<DateTime, double>();
             // usando i dati ricevuti aggiunge variabile x = tempo crescente
             int idx = 0;
             foreach (var item in yData)
diff --git a/MP.Stats/Resources/ChangeLog.html b/MP.Stats/Resources/ChangeLog.html
index 44898f68..00e3c255 100644
--- a/MP.Stats/Resources/ChangeLog.html
+++ b/MP.Stats/Resources/ChangeLog.html
@@ -1,6 +1,6 @@
 <body>
     <i>Modulo statistiche MAPO</i>
-    <h4>Versione: 6.14.2202.2412</h4>
+    <h4>Versione: 6.14.2202.2511</h4>
     <br />
     Note di rilascio:
     <ul>
diff --git a/MP.Stats/Resources/VersNum.txt b/MP.Stats/Resources/VersNum.txt
index 7b2142ac..47a106c9 100644
--- a/MP.Stats/Resources/VersNum.txt
+++ b/MP.Stats/Resources/VersNum.txt
@@ -1 +1 @@
-6.14.2202.2412
+6.14.2202.2511
diff --git a/MP.Stats/Resources/manifest.xml b/MP.Stats/Resources/manifest.xml
index af8a27b4..94cd6606 100644
--- a/MP.Stats/Resources/manifest.xml
+++ b/MP.Stats/Resources/manifest.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <item>
-  <version>6.14.2202.2412</version>
+  <version>6.14.2202.2511</version>
   <url>https://nexus.steamware.net/repository/SWS/MP-STATS/stable/LAST/MP.Stats.zip</url>
   <changelog>https://nexus.steamware.net/repository/SWS/MP-STATS/stable/LAST/ChangeLog.html</changelog>
   <mandatory>false</mandatory>