diff --git a/ZeroLevel/Services/Location/WSG84/WSG84Constants.cs b/ZeroLevel/Services/Location/WSG84/WSG84Constants.cs
new file mode 100644
index 0000000..bd74e5d
--- /dev/null
+++ b/ZeroLevel/Services/Location/WSG84/WSG84Constants.cs
@@ -0,0 +1,34 @@
+namespace ZeroLevel.Services.Location.WSG84
+{
+    internal class WSG84Constants
+    {
+        /// <summary>
+        /// Большая полуось (в метрах)
+        /// </summary>
+        public const float a = 6378137;
+        /// <summary>
+        /// Полярное сжатие 1/f
+        /// </summary>
+        public const float f = 298.257223563f;
+        /// <summary>
+        /// Угловая скорость рад/с-1
+        /// </summary>
+        public const float w = 7.292115f * .00001f;
+        /// <summary>
+        /// Геоцентрическая гравитационная постоянная (с учетом массы атмосферы Земли)
+        /// </summary>
+        public const float GM = 398600.5f;
+        /// <summary>
+        /// Второй гармонический коэффициент
+        /// </summary>
+        public const float C20 = -484.16685f * 0.000001f;
+        /// <summary>
+        /// Нормальный потенциал м2/с2
+        /// </summary>
+        public const float U0 = 62636861.074f;
+        /// <summary>
+        /// Скорость света м/с
+        /// </summary>
+        public const float c = 299792458f;
+    }
+}
diff --git a/ZeroLevel/Services/PartitionStorage/Interfaces/IStore.cs b/ZeroLevel/Services/PartitionStorage/Interfaces/IStore.cs
index c25fbee..4696104 100644
--- a/ZeroLevel/Services/PartitionStorage/Interfaces/IStore.cs
+++ b/ZeroLevel/Services/PartitionStorage/Interfaces/IStore.cs
@@ -35,6 +35,10 @@ namespace ZeroLevel.Services.PartitionStorage
         /// </summary>
         IAsyncEnumerable<KV<TKey, TValue>> Bypass(TMeta meta);
         /// <summary>
+        /// bypass all keys by meta
+        /// </summary>
+        IAsyncEnumerable<TKey> BypassKeys(TMeta meta);
+        /// <summary>
         /// true - if key exists
         /// </summary>
         Task<bool> Exists(TMeta meta, TKey key);
diff --git a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionAccessor.cs b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionAccessor.cs
index 6d0574a..bd25465 100644
--- a/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionAccessor.cs
+++ b/ZeroLevel/Services/PartitionStorage/Interfaces/IStorePartitionAccessor.cs
@@ -25,12 +25,15 @@ namespace ZeroLevel.Services.PartitionStorage
         /// Search in a partition for a specified keys
         /// </summary>
         IAsyncEnumerable<KV<TKey, TValue>> Find(IEnumerable<TKey> keys);
-
         /// <summary>
         /// Iterating over all recorded data
         /// </summary>
         IAsyncEnumerable<KV<TKey, TValue>> Iterate();
         /// <summary>
+        /// Iterating over all recorded data and return keys only
+        /// </summary>
+        IAsyncEnumerable<TKey> IterateKeys();
+        /// <summary>
         /// Iterating over all recorded data of the file with the specified key
         /// </summary>
         IAsyncEnumerable<KV<TKey, TValue>> IterateKeyBacket(TKey key);
diff --git a/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionAccessor.cs b/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionAccessor.cs
index 1a8b49b..0b3a251 100644
--- a/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionAccessor.cs
+++ b/ZeroLevel/Services/PartitionStorage/Partition/StorePartitionAccessor.cs
@@ -134,6 +134,38 @@ namespace ZeroLevel.Services.PartitionStorage
                 }
             }
         }
+
+        public async IAsyncEnumerable<TKey> IterateKeys()
+        {
+            if (Directory.Exists(_catalog))
+            {
+                var files = Directory.GetFiles(_catalog);
+                if (files != null && files.Length > 0)
+                {
+                    foreach (var file in files)
+                    {
+                        var accessor = PhisicalFileAccessorCachee.GetDataAccessor(file, 0);
+                        if (accessor != null)
+                        {
+                            using (var reader = new MemoryStreamReader(accessor))
+                            {
+                                while (reader.EOS == false)
+                                {
+                                    var kv = await Serializer.KeyDeserializer.Invoke(reader);
+                                    if (kv.Success == false) break;
+
+                                    var vv = await Serializer.ValueDeserializer.Invoke(reader);
+                                    if (vv.Success == false) break;
+
+                                    yield return kv.Value;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
         public async IAsyncEnumerable<KV<TKey, TValue>> IterateKeyBacket(TKey key)
         {
             var fileName = _options.GetFileName(key, _info);
diff --git a/ZeroLevel/Services/PartitionStorage/Store.cs b/ZeroLevel/Services/PartitionStorage/Store.cs
index 3a8ba19..19c4487 100644
--- a/ZeroLevel/Services/PartitionStorage/Store.cs
+++ b/ZeroLevel/Services/PartitionStorage/Store.cs
@@ -113,6 +113,21 @@ namespace ZeroLevel.Services.PartitionStorage
             }
         }
 
+        public async IAsyncEnumerable<TKey> BypassKeys(TMeta meta)
+        {
+            var accessor = CreateAccessor(meta);
+            if (accessor != null)
+            {
+                using (accessor)
+                {
+                    await foreach (var kv in accessor.IterateKeys())
+                    {
+                        yield return kv;
+                    }
+                }
+            }
+        }
+
         public async Task<bool> Exists(TMeta meta, TKey key)
         {
             var accessor = CreateAccessor(meta);
diff --git a/ZeroLevel/ZeroLevel.csproj b/ZeroLevel/ZeroLevel.csproj
index 010c872..fc60328 100644
--- a/ZeroLevel/ZeroLevel.csproj
+++ b/ZeroLevel/ZeroLevel.csproj
@@ -6,16 +6,16 @@
 </Description>
     <Authors>ogoun</Authors>
     <Company>ogoun</Company>
-    <AssemblyVersion>3.4.0.7</AssemblyVersion>
-    <PackageReleaseNotes>KVDB fixes</PackageReleaseNotes>
+    <AssemblyVersion>3.4.0.8</AssemblyVersion>
+    <PackageReleaseNotes></PackageReleaseNotes>
     <PackageProjectUrl>https://github.com/ogoun/Zero/wiki</PackageProjectUrl>
     <Copyright>Copyright Ogoun 2023</Copyright>
     <PackageLicenseUrl></PackageLicenseUrl>
     <PackageIconUrl></PackageIconUrl>
     <RepositoryUrl>https://github.com/ogoun/Zero</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <Version>3.4.0.7</Version>
-    <FileVersion>3.4.0.7</FileVersion>
+    <Version>3.4.0.8</Version>
+    <FileVersion>3.4.0.8</FileVersion>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <PackageIcon>zero.png</PackageIcon>
     <DebugType>full</DebugType>