New Soil temperature tidy up

Models/Interfaces/ISoilTemperature.cs

@@ -5,7 +5,26 @@
     /// </summary>
     public interface ISoilTemperature
     {
-        /// <summary>Returns soil temperature for each layer (oc)</summary>
+        /// <summary>Returns soil temperature for each layer (oC)</summary>
         double[] Value { get; }
+
+        /// <summary>Returns the daily average soil temperature for each layer (oC)</summary>
+        double[] AverageSoilTemperature { get; }
+
+        /// <summary>Returns the daily average temperature of soil surface (oC)</summary>
+        double AverageSoilSurfaceTemperature { get; }
+
+        /// <summary>Returns the daily minimum soil temperature for each layer (oC)</summary>
+        double[] MinimumSoilTemperature { get; }
+
+        /// <summary>Returns the daily minimum temperature of soil surface (oC)</summary>
+        double MinimumSoilSurfaceTemperature { get; }
+
+        /// <summary>Returns the daily maximum soil temperature for each layer (oC)</summary>
+        double[] MaximumSoilTemperature { get; }
+
+        /// <summary>Returns the daily maximum temperature of soil surface (oC)</summary>
+        double MaximumSoilSurfaceTemperature { get; }
+
     }
 }

Models/Soils/SoilTemp/CERESSoilTemperature.cs

@@ -131,9 +131,27 @@ private void Clear()
                 surf_temp[day] = ave_temp;
         }
 
-        /// <summary>Returns soil temperature for each layer (oc)</summary>
+        /// <summary>Soil temperature for each layer (oC)</summary>
         public double[] Value { get { return st; } }
 
+        /// <summary>Average soil temperature for each layer (oC)</summary>
+        public double[] AverageSoilTemperature { get { return st; } }
+
+        /// <summary>Average soil temperature for soil surface (oC)</summary>
+        public double AverageSoilSurfaceTemperature { get { return double.NaN; } }
+
+        /// <summary>Average soil temperature for each layer (oC)</summary>
+        public double[] MinimumSoilTemperature { get { return st; } }
+
+        /// <summary>Average soil temperature for soil surface (oC)</summary>
+        public double MinimumSoilSurfaceTemperature { get { return double.NaN; } }
+
+        /// <summary>Average soil temperature for each layer (oC)</summary>
+        public double[] MaximumSoilTemperature { get { return st; } }
+
+        /// <summary>Average soil temperature for soil surface (oC)</summary>
+        public double MaximumSoilSurfaceTemperature { get { return double.NaN; } }
+
         /// <summary>Called to perform soil temperature calculations</summary>
         /// <param name="sender">The sender.</param>
         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>

Tests/UnitTests/Soils/MockSoilTemperature.cs

@@ -11,5 +11,11 @@ namespace UnitTests.Soils
     internal class MockSoilTemperature : Model, ISoilTemperature
     {
         public double[] Value { get; set; }
+        public double[] AverageSoilTemperature { get; }
+        public double AverageSoilSurfaceTemperature { get; }
+        public double[] MinimumSoilTemperature { get; }
+        public double MinimumSoilSurfaceTemperature { get; }
+        public double[] MaximumSoilTemperature { get; }
+        public double MaximumSoilSurfaceTemperature { get; }
     }
 }