diff --git a/CUERipper/frmCUERipper.cs b/CUERipper/frmCUERipper.cs
index d49bdde..d625d14 100644
--- a/CUERipper/frmCUERipper.cs
+++ b/CUERipper/frmCUERipper.cs
@@ -381,8 +381,7 @@ namespace CUERipper
 				toolStripStatusLabel1.Text = status;
 				toolStripProgressBar1.Value = Math.Max(0, Math.Min(100, (int)(percentTrck * 100)));
 
-				progressBarErrors.Maximum = (int)(Math.Log(e.PassEnd - e.PassStart + 1) * 10);
-				progressBarErrors.Value = Math.Min(progressBarErrors.Maximum, (int)(Math.Log(e.ErrorsCount + 1) * 10));
+                progressBarErrors.Value = Math.Min(progressBarErrors.Maximum, (int)(100 * Math.Log(e.ErrorsCount / 10.0 + 1) / Math.Log((e.PassEnd - e.PassStart) / 10.0 + 1)));
 				progressBarErrors.Enabled = e.Pass >= audioSource.CorrectionQuality;
 
 				progressBarCD.Maximum = (int) audioSource.TOC.AudioLength;
@@ -408,7 +407,7 @@ namespace CUERipper
                 cueSheet.CTDB.Submit(
 					(int)cueSheet.ArVerify.WorstConfidence() + 1,
 					audioSource.CorrectionQuality == 0 ? 0 :
-					100 - (int)(7 * Math.Log(audioSource.ErrorsCount + 1)), // ErrorsCount==1 ~= 95, ErrorsCount==max ~= 5;
+					(int)(100 * (1.0 - Math.Log(audioSource.ErrorsCount + 1) / Math.Log(audioSource.TOC.AudioLength + 1))),
 					cueSheet.Metadata.Artist,
 					cueSheet.Metadata.Title,
 					cueSheet.TOC.Barcode);
@@ -1376,17 +1375,6 @@ namespace CUERipper
                 tt.FrameOffset = 150 + (int)selectedDriveInfo.drive.TOC[i].Start;
                 entry.Tracks.Add(tt);
             }
-            /*
-			foreach (CUETrackMetadata t in data.selectedRelease.metadata.Tracks)
-			{
-				Freedb.Track tt = new Freedb.Track();
-				if (t.Artist != "" && t.Artist != entry.Artist)
-					tt.Title = t.Artist + " / " + t.Title;
-				else
-					tt.Title = t.Title;
-				tt.FrameOffset = 150 + (int)selectedDriveInfo.drive.TOC[i++].Start;
-				entry.Tracks.Add(tt);
-			}*/
 
 			FreedbHelper m_freedb = new FreedbHelper();
 
diff --git a/CUETools.Processor/CUESheetLogWriter.cs b/CUETools.Processor/CUESheetLogWriter.cs
index 1bb4570..4f49de2 100644
--- a/CUETools.Processor/CUESheetLogWriter.cs
+++ b/CUETools.Processor/CUESheetLogWriter.cs
@@ -83,6 +83,15 @@ namespace CUETools.Processor
 
         #region EAC
 
+        private static double GetRangeQuality(CUESheet sheet, uint start, uint length)
+        {
+            int errCount = 0;
+            for (uint iSector = start; iSector < start + length; iSector++)
+                if (sheet.CDRipper.Errors[(int)iSector - (int)sheet.TOC[sheet.TOC.FirstAudio][0].Start])
+                    errCount++;
+            return 100 * (1.0 - Math.Log(errCount / 5.0 + 1) / Math.Log(length / 5.0 + 1));
+        }
+
         public static string GetExactAudioCopyLog(CUESheet sheet)
         {
             StringWriter logWriter = new StringWriter(CultureInfo.InvariantCulture);
@@ -149,7 +158,7 @@ namespace CUETools.Processor
 
                     logWriter.WriteLine();
                     logWriter.WriteLine("     Peak level {0:F1} %", (sheet.ArVerify.PeakLevel(track + 1) * 1000 / 65534) * 0.1);
-                    logWriter.WriteLine("     Track quality 100.0 %");
+                    logWriter.WriteLine("     Track quality {0:F1} %", GetRangeQuality(sheet, sheet.TOC[track + sheet.TOC.FirstAudio].Start, sheet.TOC[track + sheet.TOC.FirstAudio].Length));
                     if (sheet.ArTestVerify != null)
                     logWriter.WriteLine("     Test CRC {0:X8}", sheet.ArTestVerify.CRC32(track + 1));
                     logWriter.WriteLine("     Copy CRC {0:X8}", sheet.ArVerify.CRC32(track + 1));
@@ -181,7 +190,7 @@ namespace CUETools.Processor
                 wereErrors = sheet.PrintErrors(logWriter, sheet.TOC[sheet.TOC.FirstAudio][0].Start, sheet.TOC.AudioLength);
                 logWriter.WriteLine();
                 logWriter.WriteLine("     Peak level {0:F1} %", (sheet.ArVerify.PeakLevel() * 1000 / 65535) * 0.1);
-                logWriter.WriteLine("     Range quality 100.0 %");
+                logWriter.WriteLine("     Range quality {0:F1} %", GetRangeQuality(sheet, sheet.TOC[sheet.TOC.FirstAudio][0].Start, sheet.TOC.AudioLength));
                 if (sheet.ArTestVerify != null)
                 logWriter.WriteLine("     Test CRC {0:X8}", sheet.ArTestVerify.CRC32(0));
                 logWriter.WriteLine("     Copy CRC {0:X8}", sheet.ArVerify.CRC32(0));