diff --git a/include/am_utils/am_onlinestatistics.h b/include/am_utils/am_onlinestatistics.h
index 40c6aa5..b4459f6 100644
--- a/include/am_utils/am_onlinestatistics.h
+++ b/include/am_utils/am_onlinestatistics.h
@@ -13,7 +13,7 @@ namespace am {
 class OnlineStatistics {
 public:
  OnlineStatistics() : OnlineStatistics(0) {};
- OnlineStatistics(size_t N) : ary_(0), cb(N) {};
+ OnlineStatistics(size_t N) : ary_(0), cb_(N) {};
   void addData( double val );
   void setSize( size_t N );
   void insertion_sort(std::vector<double>& ary);
@@ -29,11 +29,11 @@ class OnlineStatistics {
   
 private:
   size_t N;
-  boost::circular_buffer<double> cb;
+  std::vector<double> ary_;
+  boost::circular_buffer<double> cb_;
   double mean_; //  mean, median
   double m2n_;        // sum of squares of differences from current mean
   double var_, skew_, kurt_; //  variance, skewness, and kurtosis
-  std::vector<double> ary_;
 };
 
 
diff --git a/src/am_onlinestatistics.cpp b/src/am_onlinestatistics.cpp
index 0daf3d4..71fc47d 100644
--- a/src/am_onlinestatistics.cpp
+++ b/src/am_onlinestatistics.cpp
@@ -16,20 +16,20 @@ namespace am {
  *
  */
 void OnlineStatistics::addData( double val ) {
-    if ( cb.size() == 0 ) {
+    if ( cb_.size() == 0 ) {
       mean_ = val;
       var_  = NAN;
       m2n_  = 0.0;
-    } else if ( 1 + cb.size() > cb.capacity() ) {
-      double tmp = cb.back();
+    } else if ( 1 + cb_.size() > cb_.capacity() ) {
+      double tmp = cb_.back();
       // std::cout << *this << std::endl;
       double oldmean = mean_;
-      mean_ = mean_ + (val - tmp)/cb.size();
+      mean_ = mean_ + (val - tmp)/cb_.size();
       double delta = mean_ - oldmean;
       double alpha = val - tmp;
       /* Fix this part here */
-      m2n_ = m2n_ + (delta*delta*cb.size()) + alpha*(alpha+2*tmp-2*mean_ );
-      var_ = m2n_ / cb.size();
+      m2n_ = m2n_ + (delta*delta*cb_.size()) + alpha*(alpha+2*tmp-2*mean_ );
+      var_ = m2n_ / cb_.size();
       auto const ip = std::find( ary_.begin(), ary_.end(), tmp );
       if ( ip != ary_.end() ) {
         ary_.erase(ip);
@@ -37,13 +37,13 @@ void OnlineStatistics::addData( double val ) {
       
     } else {
       double oldmean_ = mean_;
-      mean_ = (val - mean_)/(cb.size()+1) + mean_;
+      mean_ = (val - mean_)/(cb_.size()+1) + mean_;
       m2n_ = m2n_ +  ( val - oldmean_)*(val - mean_ );
-      var_ = m2n_ / (cb.size()+1);
+      var_ = m2n_ / (cb_.size()+1);
     }
     ary_.insert(ary_.begin(),val );
     insertion_sort(ary_);
-    cb.push_front(val);
+    cb_.push_front(val);
     // std::cout << *this << std::endl;
 }
 
@@ -59,14 +59,14 @@ void OnlineStatistics::insertion_sort(std::vector<double>& ary) {
 
 void OnlineStatistics::setSize( size_t N )
 {
-  cb.set_capacity(N);
-  cb.erase(cb.begin(),cb.end());
+  cb_.set_capacity(N);
+  cb_.erase(cb_.begin(),cb_.end());
   ary_.clear();
 }
   
 void OnlineStatistics::setDelayStats( am_utils::DelayStats &msg )
 {
-  msg.count = cb.size();
+  msg.count = cb_.size();
   msg.mean_delay = getMean();
   msg.stddev_delay = sqrt(getVariance());
   msg.min_delay = getMin(); 
@@ -77,8 +77,8 @@ void OnlineStatistics::setDelayStats( am_utils::DelayStats &msg )
 std::ostream& operator<<(std::ostream& os, OnlineStatistics &stats) {
   // os << stats.cb;
   os << "[ ";
-  for ( auto it = stats.cb.begin() ; it != stats.cb.end(); ++it  ) { 
-    os << *it << ( it + 1 == stats.cb.end() ? "" : ", " );
+  for ( auto it = stats.cb_.begin() ; it != stats.cb_.end(); ++it  ) { 
+    os << *it << ( it + 1 == stats.cb_.end() ? "" : ", " );
   }
   os << "]";
   return os;