diff --git a/AsbCloudInfrastructure/Services/DataSaubStatService.cs b/AsbCloudInfrastructure/Services/DataSaubStatService.cs
index b9bcc251..6f3d48ea 100644
--- a/AsbCloudInfrastructure/Services/DataSaubStatService.cs
+++ b/AsbCloudInfrastructure/Services/DataSaubStatService.cs
@@ -114,7 +114,7 @@ namespace AsbCloudInfrastructure.Services
                 if (indexEnd == indexStart)
                     continue;
 
-                var length = indexEnd - indexStart;
+                var length = indexEnd - indexStart + 1;
 
                 var subset = dataSaub.AsSpan(indexStart, length);
                 var stats = CalcStats(operation, subset);
@@ -135,7 +135,7 @@ namespace AsbCloudInfrastructure.Services
 
                 if (IsNewCacheItem(previous, current) || i == dataSaub.Length - 1)
                 {
-                    var length = i - indexStart;
+                    var length = i - indexStart + 1;
                     var span = dataSaub.Slice(indexStart, length);
                     indexStart = i;
                     if (length <= 2 || (span[^1].WellDepth - span[0].WellDepth) < 0.001)
diff --git a/AsbCloudWebApi.Tests/Services/DataSaubStatServiceTest.cs b/AsbCloudWebApi.Tests/Services/DataSaubStatServiceTest.cs
index 32595c0d..baae9b4f 100644
--- a/AsbCloudWebApi.Tests/Services/DataSaubStatServiceTest.cs
+++ b/AsbCloudWebApi.Tests/Services/DataSaubStatServiceTest.cs
@@ -1,27 +1,24 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Threading;
-using System.Threading.Tasks;
 using AsbCloudApp.Data;
 using AsbCloudApp.Data.DetectedOperation;
 using AsbCloudApp.Data.SAUB;
-using AsbCloudApp.Data.User;
 using AsbCloudApp.Repositories;
 using AsbCloudApp.Requests;
 using AsbCloudApp.Services;
-using AsbCloudInfrastructure.Repository;
 using AsbCloudInfrastructure.Services;
-using AsbCloudInfrastructure.Services.SAUB;
+using Mapster;
 using NSubstitute;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using Xunit;
 
 namespace AsbCloudWebApi.Tests.Services;
 
 public class DataSaubStatServiceTest
 {
+    private readonly int Gap = 5;
     private readonly IDataSaubStatRepository dataSaubStatRepositoryMock = Substitute.For<IDataSaubStatRepository>();
     private readonly ITelemetryDataCache<TelemetryDataSaubDto> telemetryDataCacheMock = Substitute.For<ITelemetryDataCache<TelemetryDataSaubDto>>();
     private readonly IDetectedOperationRepository detectedOperationRepositoryMock = Substitute.For<IDetectedOperationRepository>();
@@ -29,7 +26,7 @@ public class DataSaubStatServiceTest
 
     private DataSaubStatService dataSaubStatService;
 
-    private int[] idTelemetries = [1, 2, 3];
+    private int[] idTelemetries = [1];
     private IEnumerable<DataSaubStatDto> dataSaubStatDtos = new List<DataSaubStatDto>()
     {
         new DataSaubStatDto {
@@ -55,7 +52,7 @@ public class DataSaubStatServiceTest
             RotorTorque = 1,
             RotorTorqueLimitMax = 1,
             RotorTorqueSp = 1,
-            Speed = 1            
+            Speed = 1
         },
         new DataSaubStatDto {
             Id = 2,
@@ -109,8 +106,8 @@ public class DataSaubStatServiceTest
         },
     };
 
-    private IEnumerable<DetectedOperationDto> detectedOperationDtos = new List<DetectedOperationDto>() {
-        new DetectedOperationDto { 
+    private List<DetectedOperationDto> detectedOperationDtos = new List<DetectedOperationDto>() {
+        new DetectedOperationDto {
             Id = 1,
             DateEnd = DateTimeOffset.UtcNow,
             DateStart = DateTimeOffset.UtcNow.AddHours(-1),
@@ -120,11 +117,11 @@ public class DataSaubStatServiceTest
             IdTelemetry = 1,
             Value = 1,
             IdEditor = 1,
-            IdUserAtStart = 1            
+            IdUserAtStart = 1
         }
     };
 
-    private IEnumerable<TelemetryDataSaubDto> telemetryDataSaubDtos1 = new List<TelemetryDataSaubDto> {
+    private List<TelemetryDataSaubDto> telemetryDataSaubDtos = new List<TelemetryDataSaubDto> {
         new TelemetryDataSaubDto()
         {
             IdTelemetry = 1,
@@ -168,280 +165,7 @@ public class DataSaubStatServiceTest
             RotorTorqueIdle = 1,
             RotorTorqueSp = 1,
             RotorTorqueLimitMax = 1,
-            WellDepth = 1,
-        },
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 1,
-            DateTime = DateTime.UtcNow.AddMinutes(-20),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 1,
-        },
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 1,
-            DateTime = DateTime.UtcNow.AddMinutes(-10),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 2,
-        },
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 1,
-            DateTime = DateTime.UtcNow.AddMinutes(-5),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 3,
-        },
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 1,
-            DateTime = DateTime.UtcNow.AddMinutes(5),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 1,
-        }
-    };
-
-    private IEnumerable<TelemetryDataSaubDto> telemetryDataSaubDtos2 = new List<TelemetryDataSaubDto> {
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 2,
-            DateTime = DateTime.Now.AddMinutes(-20),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 1,
-        },
-        new TelemetryDataSaubDto()
-        {
-            IdTelemetry = 2,
-            DateTime = DateTime.Now.AddMinutes(-20),
-            AxialLoad = 1,
-            AxialLoadLimitMax = 1,
-            AxialLoadSp = 1,
-            BitDepth = 1,
-            BlockPosition = 1,
-            BlockPositionMax = 1,
-            BlockPositionMin = 1,
-            BlockSpeed = 1,
-            BlockSpeedSp = 1,
-            BlockSpeedSpDevelop = 1,
-            BlockSpeedSpRotor = 1,
-            BlockSpeedSpSlide = 1,
-            Flow = 1,
-            FlowDeltaLimitMax = 1,
-            FlowIdle = 1,
-            HookWeight = 1,
-            HookWeightIdle = 1,
-            HookWeightLimitMax = 1,
-            HookWeightLimitMin = 1,
-            IdFeedRegulator = 1,
-            IdUser = 1,
-            Mode = 1,
-            Mse = 1,
-            MseState = 1,
-            Pressure = 1,
-            PressureDeltaLimitMax = 1,
-            PressureIdle = 1,
-            PressureSp = 1,
-            PressureSpDevelop = 1,
-            PressureSpRotor = 1,
-            PressureSpSlide = 1,
-            Pump0Flow = 1,
-            Pump1Flow = 1,
-            Pump2Flow = 1,
-            RotorSpeed = 1,
-            RotorTorque = 1,
-            RotorTorqueIdle = 1,
-            RotorTorqueSp = 1,
-            RotorTorqueLimitMax = 1,
-            WellDepth = 1,
+            WellDepth = 10,
         }
     };
 
@@ -455,35 +179,131 @@ public class DataSaubStatServiceTest
             .GetLastsAsync(Arg.Any<int[]>(), Arg.Any<CancellationToken>())
             .Returns(dataSaubStatDtos);
 
-        detectedOperationRepositoryMock
-            .Get(Arg.Any<DetectedOperationByTelemetryRequest>(), Arg.Any<CancellationToken>())
-            .Returns(detectedOperationDtos);
+        var telemetrySaubDto = telemetryDataSaubDtos.FirstOrDefault();
+        if (telemetrySaubDto != null)
+        {
+            //заполнение списка телеметрий следующим образом:
+            // - всего в списке 6 элементов:
+            // - все они попадают в диапазон, определенный датами DateStart и DateEnd соответствующей записи detectedOperation
+            // - из этих 6-х записей у 2-х записей меняется параметр,
+            // являющийся признаком начала нового интервала (новой записи dataSaubStat)
+            // таким образом, в базе данных должно создаться 1 новая запись dataSaubStat (insertedDataSaubStatCount = 1)
+            var telemetrySaubDto1 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto1.DateTime = DateTime.UtcNow.AddMinutes(-20);
+            telemetryDataSaubDtos.Add(telemetrySaubDto1);
+
+            var telemetrySaubDto2 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto2.DateTime = DateTime.UtcNow.AddMinutes(-10);
+            telemetrySaubDto2.RotorTorqueLimitMax = 2;
+            telemetryDataSaubDtos.Add(telemetrySaubDto2);
+
+            var telemetrySaubDto3 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto3.DateTime = DateTime.UtcNow.AddMinutes(-8);
+            telemetrySaubDto3.RotorTorqueLimitMax = 2;
+            telemetryDataSaubDtos.Add(telemetrySaubDto3);
+
+            var telemetrySaubDto4 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto4.DateTime = DateTime.UtcNow.AddMinutes(-6);
+            telemetrySaubDto4.RotorTorqueLimitMax = 2;
+            telemetryDataSaubDtos.Add(telemetrySaubDto4);
+
+            var telemetrySaubDto5 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto5.DateTime = DateTime.UtcNow.AddMinutes(-4);
+            telemetrySaubDto5.RotorTorqueLimitMax = 2;
+            telemetryDataSaubDtos.Add(telemetrySaubDto5);
+
+            var telemetrySaubDto6 = telemetrySaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetrySaubDto6.DateTime = DateTime.UtcNow.AddMinutes(-2);
+            telemetrySaubDto6.RotorTorqueLimitMax = 3;
+            telemetrySaubDto6.WellDepth = 11;
+            telemetryDataSaubDtos.Add(telemetrySaubDto6);
+        }
 
         dataSaubServiceMock
-            .Get(1, Arg.Any<bool>(), Arg.Any<DateTimeOffset>(), Arg.Any<DateTimeOffset>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
-            .Returns(telemetryDataSaubDtos1);
-
-        dataSaubStatRepositoryMock
-            .InsertRangeAsync(Arg.Any<IEnumerable<DataSaubStatDto>>(), Arg.Any<CancellationToken>())
-            .Returns(2);
+            .Get(Arg.Any<int>(), Arg.Any<bool>(), Arg.Any<DateTimeOffset>(), Arg.Any<DateTimeOffset>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+            .Returns(telemetryDataSaubDtos);
 
         dataSaubStatService = new DataSaubStatService(
-            dataSaubStatRepositoryMock, 
-            telemetryDataCacheMock, 
-            dataSaubServiceMock, 
+            dataSaubStatRepositoryMock,
+            telemetryDataCacheMock,
+            dataSaubServiceMock,
             detectedOperationRepositoryMock);
     }
 
     [Fact]
-    public async Task GetByMarkId_ShouldReturn_FileInfo()
+    public async Task Create_1DataSaubStatItems_ShouldReturn__Success()
     {
-        //act
-        //var data = await fileService.GetByMarkId(idMark, CancellationToken.None);
-        Action<string, double?> action = async (a, b) => {
-            ;
+        var insertedDataSaubStatCount = 1;
+
+        detectedOperationRepositoryMock
+            .Get(Arg.Any<DetectedOperationByTelemetryRequest>(), Arg.Any<CancellationToken>())
+            .Returns(detectedOperationDtos);
+
+
+        dataSaubStatRepositoryMock
+            .InsertRangeAsync(Arg.Any<IEnumerable<DataSaubStatDto>>(), Arg.Any<CancellationToken>())
+            .Returns(insertedDataSaubStatCount);
+
+        Action<string, double?> action = (message, count) =>
+        {
+            //assert
+            Assert.Equal(insertedDataSaubStatCount, count);
         };
-        await dataSaubStatService.CreateStatAsync(5, action, CancellationToken.None);
-        //assert
-        Assert.NotNull("sd");
+
+        //act
+        await dataSaubStatService.CreateStatAsync(Gap, action, CancellationToken.None);
+    }
+
+    [Fact]
+    public async Task Create_2DataSaubStatItems_ShouldReturn__Success()
+    {
+        var insertedDataSaubStatCount = 2;
+
+        var detectedOperationDto = detectedOperationDtos.FirstOrDefault();
+        if (detectedOperationDto != null)
+        {
+            var detectedOperationDto1 = detectedOperationDto.Adapt<DetectedOperationDto>();
+            detectedOperationDto1.DateStart = DateTimeOffset.UtcNow.AddMinutes(1);
+            detectedOperationDto1.DateEnd = DateTimeOffset.UtcNow.AddHours(1);
+
+            detectedOperationDtos.Add(detectedOperationDto1);
+        }
+
+        var telemetryDataSaubDto = telemetryDataSaubDtos.LastOrDefault();
+        if (telemetryDataSaubDto != null)
+        {
+            var telemetryDataSaubDto1 = telemetryDataSaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetryDataSaubDto1.DateTime = DateTime.UtcNow.AddMinutes(10);
+            telemetryDataSaubDto1.WellDepth = telemetryDataSaubDto.WellDepth + 1;
+
+            var telemetryDataSaubDto2 = telemetryDataSaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetryDataSaubDto2.DateTime = DateTime.UtcNow.AddMinutes(20);
+            telemetryDataSaubDto2.WellDepth = telemetryDataSaubDto1.WellDepth + 1;
+
+            var telemetryDataSaubDto3 = telemetryDataSaubDto.Adapt<TelemetryDataSaubDto>();
+            telemetryDataSaubDto3.DateTime = DateTime.UtcNow.AddMinutes(30);
+            telemetryDataSaubDto3.WellDepth = telemetryDataSaubDto2.WellDepth + 1;
+
+            telemetryDataSaubDtos.Add(telemetryDataSaubDto1);
+            telemetryDataSaubDtos.Add(telemetryDataSaubDto2);
+            telemetryDataSaubDtos.Add(telemetryDataSaubDto3);
+        }
+
+        detectedOperationRepositoryMock
+            .Get(Arg.Any<DetectedOperationByTelemetryRequest>(), Arg.Any<CancellationToken>())
+            .Returns(detectedOperationDtos);
+
+        dataSaubStatRepositoryMock
+            .InsertRangeAsync(Arg.Any<IEnumerable<DataSaubStatDto>>(), Arg.Any<CancellationToken>())
+            .Returns(insertedDataSaubStatCount);
+
+        Action<string, double?> action = (message, count) =>
+        {
+            //assert
+            Assert.Equal(insertedDataSaubStatCount, count);
+        };
+
+        //act
+        await dataSaubStatService.CreateStatAsync(Gap, action, CancellationToken.None);
     }
 }
\ No newline at end of file