Index: /trunk/BNC/src/rinex/reqcanalyze.cpp
===================================================================
--- /trunk/BNC/src/rinex/reqcanalyze.cpp	(revision 6256)
+++ /trunk/BNC/src/rinex/reqcanalyze.cpp	(revision 6257)
@@ -317,5 +317,7 @@
       mean += point->_value;
     }
-    mean /= dataSNR1->size();
+    if (dataSNR1->size() > 0) {
+      mean /= dataSNR1->size();
+    }
     double max = (mean > 9.0) ? 54.0 : 9.0;
     QByteArray str = (mean > 9.0) ? "dbHz" : "";
@@ -836,5 +838,7 @@
       mean += point->_value;
     }
-    mean /= data->size();
+    if (data->size() > 0) {
+      mean /= data->size();
+    }
     *_log << text << mean << endl;
   }