Index: trunk/BNC/src/rinex/reqcanalyze.cpp
===================================================================
--- trunk/BNC/src/rinex/reqcanalyze.cpp	(revision 4676)
+++ trunk/BNC/src/rinex/reqcanalyze.cpp	(revision 4677)
@@ -382,6 +382,6 @@
 ////////////////////////////////////////////////////////////////////////////
 void t_reqcAnalyze::prepareObsStat(unsigned iEpo, double obsInterval) {
-  const int numEpo = int(600.0 / obsInterval); // # epochs in one chunk (10 min)
-  if (iEpo % numEpo == 0) {
+  const int sampl = int(30.0 / obsInterval);
+  if (iEpo % sampl == 0) {
     double mjdX24 = _currEpo->tt.mjddec() * 24.0;
     if (iEpo != 0) {