diff --git a/WindStressPRM/Objects/PowerStation.cs b/WindStressPRM/Objects/PowerStation.cs
index 0e7846038b5442a7bf761efc8b67ce28437b5484..90120465245bafd9a752de1a96406520b094f89e 100644
--- a/WindStressPRM/Objects/PowerStation.cs
+++ b/WindStressPRM/Objects/PowerStation.cs
@@ -103,11 +103,11 @@ namespace WindStressPRM
         {
             if (Identifier < 0)
             {
-                throw new System.ArgumentOutOfRangeException("Identifier", Identifier, "Identifer expected to be more than 0"); 
+                throw new System.ArgumentOutOfRangeException("Identifier", Identifier, "Expected >=0");
             }
-            if (Voltage < 0 || Voltage > 1500)
+            if (Voltage <= 0 || Voltage > 1500)
             {
-                throw new System.ArgumentOutOfRangeException("Voltage", Voltage, "Voltage expected to be in range (0,1500)"); 
+                throw new System.ArgumentOutOfRangeException("Voltage", Voltage, "Expected 0<Voltage<=1500");
             }
         }
         /// <summary>
diff --git a/WindStressPRM/Utils/CellSize.cs b/WindStressPRM/Utils/CellSize.cs
index f0e5f19cb1d7131e06c24d5221946a51995b7df4..c0f9848917411e2694af7cb158eda312fa113530 100644
--- a/WindStressPRM/Utils/CellSize.cs
+++ b/WindStressPRM/Utils/CellSize.cs
@@ -14,11 +14,11 @@ namespace WindStressPRM
         /// <summary>
         /// ширина ячейки (расстояние между соседними по X центрами ячеек, в размерности координат)
         /// </summary>
-        public double Width { get; set; }
+        public double Width { get; private set; }
         /// <summary>
         /// высота ячейки (расстояние между соседними по Y центрами ячеек, в размерности координат)
         /// </summary>
-        public double Height { get; set; }
+        public double Height { get; private set; }
         /// <summary>
         /// designated constructor
         /// </summary>
diff --git a/WindStressPRM/Utils/Index.cs b/WindStressPRM/Utils/Index.cs
index 089241c066d0c31ddad48279d4562075e6f5c660..bca01ce9c3b3bfa4641e1ac827829df821cd02e4 100644
--- a/WindStressPRM/Utils/Index.cs
+++ b/WindStressPRM/Utils/Index.cs
@@ -18,20 +18,24 @@ namespace WindStressPRM
         /// Inner index
         /// Внутренний индекс
         /// </summary>
-        public int Col { get; private set; }
+        public int Column { get; private set; }
         /// <summary>
         /// designated constructor
         /// </summary>
         /// <param name="Row">row index</param>
         /// <param name="Col">column index</param>
-        public Index(int Row, int Col)
+        public Index(int row, int column)
         {
-            if (Row <= -1 || Col <= -1)
+            if (row < 0)
             {
-                throw new System.ArgumentOutOfRangeException("Index must be initialized with nonegative integer value");
+                throw new System.ArgumentOutOfRangeException("Row", row, "Expected >=0");
             }
-            this.Row = Row;
-            this.Col = Col;
+            if (column < 0)
+            {
+                throw new System.ArgumentOutOfRangeException("Column", column, "Expected >=0");
+            }
+            this.Row = row;
+            this.Column = column;
         }
     }
 }
diff --git a/WindStressPRM/Utils/Matrix.cs b/WindStressPRM/Utils/Matrix.cs
index 51f81f64afd78429be5c92ce5a32d8405ed4da27..abfbbf2d6bd78f10122d28538a5d0dcad4993823 100644
--- a/WindStressPRM/Utils/Matrix.cs
+++ b/WindStressPRM/Utils/Matrix.cs
@@ -20,7 +20,7 @@ namespace WindStressPRM
         /// <returns></returns>
         public Coordinate CellToProjection(Index index)
         {
-            return new Coordinate(Origin.X + index.Row*Size.Width, Origin.Y - index.Col*Size.Height);
+            return new Coordinate(Origin.X + index.Row*Size.Width, Origin.Y - index.Column*Size.Height);
         }
         /// <summary>
         /// get index of cell for coordinate
diff --git a/WindStressPRM/WindStressPRM.cs b/WindStressPRM/WindStressPRM.cs
index 99f8551cd35ea20bb8e46f5b2dead9dae65c94b0..6ee183a730f7d90c3fb48e73a5e43e3515703f86 100644
--- a/WindStressPRM/WindStressPRM.cs
+++ b/WindStressPRM/WindStressPRM.cs
@@ -338,21 +338,21 @@ namespace WindStressPRM
             }
             if ((yDiff >= 0 && normalY) || (!normalY && yDiff < 0))
             {
-                col2 = rc.Col >= matrix.ColumnCount() - 1 ? rc.Col - 1 : rc.Col + 1;
+                col2 = rc.Column >= matrix.ColumnCount() - 1 ? rc.Column - 1 : rc.Column + 1;
             }
             else
             {
-                col2 = rc.Col > 0 ? rc.Col - 1 : rc.Col + 1;
+                col2 = rc.Column > 0 ? rc.Column - 1 : rc.Column + 1;
             }
             // indexes and values at bounds
-            Index rcBotLeft = new Index(Math.Min(row2, rc.Row), Math.Min(col2, rc.Col));
-            Index rcBotRight = new Index(Math.Max(row2, rc.Row), Math.Min(col2, rc.Col));
-            Index rcTopLeft = new Index(Math.Min(row2, rc.Row), Math.Max(col2, rc.Col));
-            Index rcTopRight = new Index(Math.Max(row2, rc.Row), Math.Max(col2, rc.Col));
-            double valBotLeft = valueGetter(matrix.Cells[rcBotLeft.Row, rcBotLeft.Col]);
-            double valBotRight = valueGetter(matrix.Cells[rcBotRight.Row, rcBotRight.Col]);
-            double valTopLeft =  valueGetter(matrix.Cells[rcTopLeft.Row, rcTopLeft.Col]);
-            double valTopRight = valueGetter(matrix.Cells[rcTopRight.Row, rcTopRight.Col]);
+            Index rcBotLeft = new Index(Math.Min(row2, rc.Row), Math.Min(col2, rc.Column));
+            Index rcBotRight = new Index(Math.Max(row2, rc.Row), Math.Min(col2, rc.Column));
+            Index rcTopLeft = new Index(Math.Min(row2, rc.Row), Math.Max(col2, rc.Column));
+            Index rcTopRight = new Index(Math.Max(row2, rc.Row), Math.Max(col2, rc.Column));
+            double valBotLeft = valueGetter(matrix.Cells[rcBotLeft.Row, rcBotLeft.Column]);
+            double valBotRight = valueGetter(matrix.Cells[rcBotRight.Row, rcBotRight.Column]);
+            double valTopLeft =  valueGetter(matrix.Cells[rcTopLeft.Row, rcTopLeft.Column]);
+            double valTopRight = valueGetter(matrix.Cells[rcTopRight.Row, rcTopRight.Column]);
             Coordinate origin = matrix.CellToProjection(rcBotLeft);
             
             bool testBotLeft = Double.IsNaN(valBotLeft);