diff --git a/BecquerelMonitor/BecquerelMonitor.csproj b/BecquerelMonitor/BecquerelMonitor.csproj
index a5dd9c3..d9698ed 100644
--- a/BecquerelMonitor/BecquerelMonitor.csproj
+++ b/BecquerelMonitor/BecquerelMonitor.csproj
@@ -35,8 +35,8 @@
     <MinimumRequiredVersion>2022.07.08.7</MinimumRequiredVersion>
     <CreateWebPageOnPublish>true</CreateWebPageOnPublish>
     <WebPage>index.html</WebPage>
-    <ApplicationRevision>3</ApplicationRevision>
-    <ApplicationVersion>2024.06.07.3</ApplicationVersion>
+    <ApplicationRevision>1</ApplicationRevision>
+    <ApplicationVersion>2024.06.11.1</ApplicationVersion>
     <UseApplicationTrust>true</UseApplicationTrust>
     <PublishWizardCompleted>true</PublishWizardCompleted>
     <BootstrapperEnabled>true</BootstrapperEnabled>
diff --git a/BecquerelMonitor/Properties/AssemblyInfo.cs b/BecquerelMonitor/Properties/AssemblyInfo.cs
index 03fa183..02ed4e3 100644
--- a/BecquerelMonitor/Properties/AssemblyInfo.cs
+++ b/BecquerelMonitor/Properties/AssemblyInfo.cs
@@ -4,13 +4,13 @@
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
-[assembly: AssemblyVersion("2024.06.07.3")]
+[assembly: AssemblyVersion("2024.06.11.1")]
 [assembly: AssemblyProduct("BecquerelMonitor")]
 [assembly: AssemblyCopyright("free")]
 [assembly: AssemblyTrademark("none")]
 [assembly: AssemblyConfiguration("")]
 [assembly: Guid("40110b38-4882-47c1-ad94-a71e58dcb5f8")]
-[assembly: AssemblyFileVersion("2024.06.07.3")]
+[assembly: AssemblyFileVersion("2024.06.11.1")]
 [assembly: AssemblyDescription("")]
 [assembly: AssemblyCompany("free")]
 [assembly: CompilationRelaxations(8)]
diff --git a/BecquerelMonitor/RadiaCodeIn.cs b/BecquerelMonitor/RadiaCodeIn.cs
index 5ca43eb..2c532aa 100644
--- a/BecquerelMonitor/RadiaCodeIn.cs
+++ b/BecquerelMonitor/RadiaCodeIn.cs
@@ -648,11 +648,8 @@ public void run()
                                 sendTroubleShoot($"Spectrum real time: {packet.TIME_S}");
                                 sendTroubleShoot($"Spectrum calibration: A0={packet.A0} A1={packet.A1} A2={packet.A2}");
                                 packet.SPECTRUM.CopyTo(hystogram_buffered, 0);
-                                ulong sum = 0;
-                                Parallel.For(0, hystogram_buffered.Length, i =>
-                                {
-                                    sum += (ulong)hystogram_buffered[i];
-                                });
+                                ulong sum = (ulong)hystogram_buffered.Sum();
+
                                 if (packet.TIME_S != 0) this.cps = sum / packet.TIME_S;
                                 sendTroubleShoot($"Spectrum cps: {this.cps}");
                                 sendTroubleShoot($"Spectrum total counts: {sum}");
diff --git a/BecquerelMonitor/Utils/SpectrumAriphmetics.cs b/BecquerelMonitor/Utils/SpectrumAriphmetics.cs
index e7e29b5..801a24b 100644
--- a/BecquerelMonitor/Utils/SpectrumAriphmetics.cs
+++ b/BecquerelMonitor/Utils/SpectrumAriphmetics.cs
@@ -153,8 +153,8 @@ public EnergySpectrum Substract(EnergySpectrum bgenergySpectrum)
                     {
                         substractedEnergySpectrum.Spectrum[i] = 0;
                     }
-                    substractedEnergySpectrum.TotalPulseCount += substractedEnergySpectrum.Spectrum[i];
                 });
+                substractedEnergySpectrum.TotalPulseCount = substractedEnergySpectrum.Spectrum.Sum();
                 substractedEnergySpectrum.ValidPulseCount = substractedEnergySpectrum.TotalPulseCount;
             } else
             {
@@ -170,8 +170,8 @@ public EnergySpectrum Substract(EnergySpectrum bgenergySpectrum)
                             substractedEnergySpectrum.Spectrum[i] = 0;
                         }
                     }
-                    substractedEnergySpectrum.TotalPulseCount += substractedEnergySpectrum.Spectrum[i];
                 });
+                substractedEnergySpectrum.TotalPulseCount = substractedEnergySpectrum.Spectrum.Sum();
                 substractedEnergySpectrum.ValidPulseCount = substractedEnergySpectrum.TotalPulseCount;
             }
             return substractedEnergySpectrum;