diff --git a/AsbCloudInfrastructure/Services/TelemetryDataBaseService.cs b/AsbCloudInfrastructure/Services/TelemetryDataBaseService.cs
index e3272ef5..42e86342 100644
--- a/AsbCloudInfrastructure/Services/TelemetryDataBaseService.cs
+++ b/AsbCloudInfrastructure/Services/TelemetryDataBaseService.cs
@@ -125,6 +125,25 @@ namespace AsbCloudInfrastructure.Services
             if (fullDataCount > 1.75 * approxPointsCount)
             {
                 var m = (int)Math.Round(1d * fullDataCount / approxPointsCount);
+
+                switch (m)
+                {
+                    //case var i when i <= 1: // тут для полноты, но никогда не сработает из-за условия выше
+                    //    break;
+                    case var i when i < 10:
+                        query = query.Where((d) => d.Date.Second % m == 0);
+                        break;
+                    case var i when i < 30:
+                        query = query.Where((d) => (d.Date.Minute * 60 + d.Date.Second) % m == 0);
+                        break;
+                    case var i when i < 600:
+                        query = query.Where((d) => ((d.Date.Hour * 60 + d.Date.Minute) * 60 + d.Date.Second) % m == 0);
+                        break;
+                    default:
+                        query = query.Where((d) => (((d.Date.DayOfYear * 24 + d.Date.Hour) * 60 + d.Date.Minute) * 60 + d.Date.Second) % m == 0);
+                        break;
+                }
+
                 if (m > 1)
                     query = query.Where((d) => (((d.Date.DayOfYear*24 + d.Date.Hour)*60 + d.Date.Minute)*60 + d.Date.Second) % m == 0);
             }