Index: /trunk/BNC/bnchelp.html
===================================================================
--- /trunk/BNC/bnchelp.html	(revision 2175)
+++ /trunk/BNC/bnchelp.html	(revision 2176)
@@ -1074,5 +1074,5 @@
 <p><a name="ppptab"><h4>3.13.4 PPP</h4></p>
 <p>
-Precise Point Positioning time series of North (red), East (green) and Up (blue) coordinate components are shown in the 'PPP' tab. Values are either referred to reference coordinates (if specified) or referred to the first extimated coordinate components. The time as given in format hh:mm refers to GPS Time. The sliding PPP time series window covers a period of 5 minutes. 
+Precise Point Positioning time series of North (red), East (green) and Up (blue) coordinate components are shown in the 'PPP' tab. Values are either referred to reference coordinates (if specified) or referred to the first estimated coordinate components. The time as given in format hh:mm refers to GPS Time. The sliding PPP time series window covers a period of 5 minutes. 
 </p>
 
Index: /trunk/BNC/bncwindow.cpp
===================================================================
--- /trunk/BNC/bncwindow.cpp	(revision 2175)
+++ /trunk/BNC/bncwindow.cpp	(revision 2176)
@@ -439,5 +439,5 @@
   _pppRefCrdYLineEdit->setWhatsThis(tr("<p>You may enter reference coordinates of the receiver position if known.</p>"));
   _pppRefCrdZLineEdit->setWhatsThis(tr("<p>You may enter reference coordinates of the receiver position if known.</p>"));
-  _bncFigurePPP->setWhatsThis(tr("PPP time series of North (red), East (green) and Up (blue) coordinate components are shown in the 'PPP' tab. Values are either referred to reference coordinates (if specified) or referred to mean values calculated from results received over the past 5 minutes."));
+  _bncFigurePPP->setWhatsThis(tr("PPP time series of North (red), East (green) and Up (blue) coordinate components are shown in the 'PPP' tab. Values are either referred to reference coordinates (if specified) or referred to the first estimated set of coordinate compoments. The sliding PPP time series window covers the period of the latest 5 minutes."));
 
   // Canvas with Editable Fields
