Index: /trunk/BNC/src/rinex/reqcanalyze.h
===================================================================
--- /trunk/BNC/src/rinex/reqcanalyze.h	(revision 10970)
+++ /trunk/BNC/src/rinex/reqcanalyze.h	(revision 10971)
@@ -67,8 +67,7 @@
       _data = new QVector<t_polarPoint*>;
     }
-    ~t_skyPlotData() {
-      qDeleteAll(*_data);
-      delete _data;
-    }
+    // _data ownership passes to t_polarData (see t_polarPlot::addCurve); do not free it here,
+    // t_skyPlotData is copied by value (QVector growth, signal/slot) so all copies share this pointer.
+    ~t_skyPlotData() {}
     char                    _sys;
     QString                 _title;