diff --git a/AsbCloudInfrastructure/Services/Subsystems/SubsystemService.cs b/AsbCloudInfrastructure/Services/Subsystems/SubsystemService.cs
index e2ab1e13..412200bd 100644
--- a/AsbCloudInfrastructure/Services/Subsystems/SubsystemService.cs
+++ b/AsbCloudInfrastructure/Services/Subsystems/SubsystemService.cs
@@ -157,8 +157,8 @@ internal class SubsystemService : ISubsystemService
             SumDepthInterval = sumDepthInterval,
             OperationCount = operationCount,
         };
-
-        oscillationStat.KUsage = oscillationStat.SumDepthInterval / oscillationStat.SumOperationDepthInterval;
+        if(oscillationStat.SumOperationDepthInterval != 0d)
+            oscillationStat.KUsage = oscillationStat.SumDepthInterval / oscillationStat.SumOperationDepthInterval;
 
         return oscillationStat;
     }
@@ -264,6 +264,9 @@ internal class SubsystemService : ISubsystemService
 
         foreach (var well in wells)
         {
+            if (well.Id == 676) {
+                ;
+            }
             var hoursOffset = well.Timezone.Hours;
 
             var geDateStartUtc = geDate?.ToUtcDateTimeOffset(hoursOffset);