diff --git a/AsbCloudInfrastructure/Services/DataService.cs b/AsbCloudInfrastructure/Services/DataService.cs
index d8c92c42..9a066f90 100644
--- a/AsbCloudInfrastructure/Services/DataService.cs
+++ b/AsbCloudInfrastructure/Services/DataService.cs
@@ -51,9 +51,9 @@ namespace AsbCloudInfrastructure.Services
             if (fullDataCount == 0)
                 return default;
 
-            if (fullDataCount > 1.2 * approxPointsCount)
+            if (fullDataCount > 1.75 * approxPointsCount)
             {
-                var m = approxPointsCount / fullDataCount;
+                var m = (int)Math.Round(1d*fullDataCount / approxPointsCount);
                 if(m > 1)
                     fullData = fullData.Where(d => d.Id % m == 0);
             }