diff --git a/Makefile b/Makefile
index e6aaebb..288c486 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CFLAGS = -O3 -Wall -ggdb 
 
-CXXFLAGS:= -std=gnu++17 -Wall -O3 -MMD -MP -ggdb -fno-omit-frame-pointer -Iext/CLI11 \
+CXXFLAGS:= -std=gnu++17 -Wall -O0 -MMD -MP -fno-omit-frame-pointer -Iext/CLI11 \
 	 -Iext/fmt-5.2.1/include/ -Iext/powerblog/ext/simplesocket -Iext/powerblog/ext/ \
 	 -I/usr/local/opt/openssl/include/  \
 	 -Iext/sgp4/libsgp4/ \
diff --git a/ephemeris.hh b/ephemeris.hh
index 7729e04..bdbb487 100644
--- a/ephemeris.hh
+++ b/ephemeris.hh
@@ -1,9 +1,21 @@
 #pragma once
 #include "minivec.hh"
 #include <iostream>
+#include <tuple>
+
 // lat, lon, height (rad, rad, meters)
 std::tuple<double, double, double> ecefToWGS84(double x, double y, double z);
 
+// lat, lon, height (deg, deg, meters)
+inline std::tuple<double, double, double> ecefToWGS84Deg(double x, double y, double z)
+{
+  auto ret = ecefToWGS84(x, y, z);
+  std::get<0>(ret) /= (M_PI / 180);
+  std::get<1>(ret) /= (M_PI / 180);
+  return ret;
+}
+
+
 double ephAge(double tow, int t0e);
 
 template<typename T>
diff --git a/ext/powerblog b/ext/powerblog
index bb78d2f..9f53fbb 160000
--- a/ext/powerblog
+++ b/ext/powerblog
@@ -1 +1 @@
-Subproject commit bb78d2f67c5db647f32e1c958ac55a914386cad8
+Subproject commit 9f53fbba7d910ca06f73149d5ec375f73a85e5ac
diff --git a/ubxtool.cc b/ubxtool.cc
index 1f05124..1413785 100644
--- a/ubxtool.cc
+++ b/ubxtool.cc
@@ -1632,7 +1632,12 @@ int main(int argc, char** argv)
         NS.iTow = 0;
         if(memcmp(&NS, &lastNS, sizeof(NS))) {
           cerr<<humanTimeNow()<<" NAV-SVIN ver "<<(int)NS.ver<< " valid "<< (int)NS.valid<<" active " << (int)NS.active<<" duration "<<NS.dur<<"s meanAcc " <<NS.meanAcc /100<< "cm obs "<<NS.obs<<" ";
-          cerr<<std::fixed<<" ( "<<NS.meanXCM + 0.01*NS.meanXHP<<", "<<NS.meanYCM  + 0.01*NS.meanYHP<<", "<<NS.meanZCM  + 0.01*NS.meanZHP<<")"<<endl;
+          cerr<<std::fixed<<" ("<<NS.meanXCM + 0.01*NS.meanXHP<<", "<<NS.meanYCM  + 0.01*NS.meanYHP<<", "<<NS.meanZCM  + 0.01*NS.meanZHP<<")";
+          
+          auto latlonh = ecefToWGS84Deg((NS.meanXCM +0.01*NS.meanXHP)/100.0, 
+                                        (NS.meanYCM +0.01*NS.meanYHP)/100.0, 
+                                        (NS.meanZCM +0.01*NS.meanZHP)/100.0);
+          cerr<<" lat "<< get<0>(latlonh)<<" lon "<< get<1>(latlonh) << " h " << get<2>(latlonh) << endl;
         }
         lastNS = NS;
       }