Index: trunk/MagicSoft/Mars/mjtrain/MJTrainSeparation.cc
===================================================================
--- trunk/MagicSoft/Mars/mjtrain/MJTrainSeparation.cc	(revision 8164)
+++ trunk/MagicSoft/Mars/mjtrain/MJTrainSeparation.cc	(revision 8170)
@@ -288,7 +288,9 @@
     }
 
-    *fLog << all << "Observation Time:     " << TMath::Nint(ontime/60) << "min" << endl;
-    *fLog << "Maximum Significance: " << Form("%.1f", sig1) << " [";
-    *fLog << Form("%.1f", sig1/TMath::Sqrt(ontime/3600)) << "/sqrt(h)]";
+    if (ontime>0)
+        *fLog << all << "Observation Time:     " << TMath::Nint(ontime/60) << "min" << endl;
+    *fLog << "Maximum Significance: " << Form("%.1f", sig1);
+    if (ontime>0)
+        *fLog << Form(" [%.1f/sqrt(h)]", sig1/TMath::Sqrt(ontime/3600));
     *fLog << endl;