diff --git a/Server/Services/json/Log10.cs b/Server/Services/json/Log10.cs
index 4faf5bf..2b891e2 100644
--- a/Server/Services/json/Log10.cs
+++ b/Server/Services/json/Log10.cs
@@ -19,9 +19,9 @@ public class Log10
     {
         Depth = Math.Log10(depth);
         ResistanceRaw = Math.Log10(raw);
-        ResistanceEdited = edited is null ? null : Math.Log10(edited.Value);
-        Resistivity = resistivity is null ? null : Math.Log10(resistivity.Value);
-        Concentration = cd is null ? null : Math.Log10(cd.Value);
+        ResistanceEdited = edited is null || edited.Value == 0 ? null : Math.Log10(edited.Value);
+        Resistivity = resistivity is null || resistivity.Value == 0 ? null : Math.Log10(resistivity.Value);
+        Concentration = cd is null || cd.Value == 0 ? null : Math.Log10(cd.Value);
     }
 
 }
\ No newline at end of file
diff --git a/Server/Services/json/ProfilePoint.cs b/Server/Services/json/ProfilePoint.cs
index ca8aeb1..9e092f1 100644
--- a/Server/Services/json/ProfilePoint.cs
+++ b/Server/Services/json/ProfilePoint.cs
@@ -31,7 +31,7 @@ public class ProfilePoint
         Concentration = cd;
         DeltaPercent = lastProfilePoint is null ? null : (lastProfilePoint.ResistanceRaw - raw) / raw;
         LastProfilePoint = lastProfilePoint;
-        Log10 = new
+        Log10 = depth == 0 || raw == 0 ? null : new
         (
             depth: depth,
             raw: raw,