diff --git a/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs b/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
index d7daf9ad..074c26ca 100644
--- a/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
+++ b/AsbCloudInfrastructure/Background/PeriodicWorks/WorkDataSaubStat.cs
@@ -154,13 +154,19 @@ namespace AsbCloudInfrastructure.Background.PeriodicWorks
             var hasOscillation = EnabledSubsystemsFlags.AutoOscillation.HasEnabledSubsystems(operation.EnabledSubsystems);
 
             var aggregatedValues = CalcAggregate(span);
+            var dateStart = span[0].DateTime;
+            var dateEnd = span[^1].DateTime;
+            var depthStart = span[0].WellDepth;
+            var depthEnd = span[^1].WellDepth;
+            var speed = ((depthEnd - depthStart) / (dateEnd - dateStart).TotalHours);
+
             var processMapDrillingCacheItem = new DataSaubStatDto
             {
-                DateStart = operation.DateStart,
-                DateEnd = operation.DateEnd,
-                DepthStart = operation.DepthStart,
-                DepthEnd = operation.DepthEnd,
-                Speed = (operation.DepthEnd - operation.DepthStart) / ((operation.DateEnd - operation.DateStart).TotalHours),
+                DateStart = dateStart,
+                DateEnd = dateEnd,
+                DepthStart = depthStart,
+                DepthEnd = depthEnd,
+                Speed = speed,
                 BlockSpeedSp = span[0].BlockSpeedSp,
                 Pressure = aggregatedValues.Pressure,
                 PressureIdle = span[0].PressureIdle,