大量更新

BoreholeExtract/BoreholeLog.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace BoreholeExtract
+{
+    public class BoreholeLog
+    {
+        public HeaderInfo Header { get; set; }
+
+        public List<LayerData> Layers { get; set; }
+
+        public double HoleDepth => Header.HoleElevation - Layers.Last().BottomElevation;
+    }
+}