diff --git a/src/observations.cpp b/src/observations.cpp
index 5d69e995c0f0182ca7f35117fc1451f37b8720b4..8e5864c644b561b3d328262f25a89fe2999f068d 100644
--- a/src/observations.cpp
+++ b/src/observations.cpp
@@ -206,7 +206,7 @@ std::set<int> Observations::filterByEphemeris(const SatellitesPositions& sats_po
           sats_pos.at(sat_number).isApprox(Eigen::Vector3d::Zero(), 1e-3) or
           sats_pos.at(sat_number).isApprox(Eigen::Vector3d::Zero(), 1e-3))
       {
-        std::cout << "Discarding sat " << sat_number << ": wrong satellite position: \n\t" << sats_pos.at(sat_number).transpose() << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": wrong satellite position: \n\t" << sats_pos.at(sat_number).transpose() << std::endl;
         remove_sats.insert(sat_number);
       }
     }
@@ -259,7 +259,7 @@ std::set<int> Observations::filterByCode()
       // wrong data
       if (std::abs(obs_sat.P[0]) < 1e-12)
       {
-        std::cout << "Discarding sat " << sat_number << ": wrong code data: " << obs_sat.P[0] << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": wrong code data: " << obs_sat.P[0] << std::endl;
         remove_sats.insert(sat_number);
       }
     }
@@ -287,7 +287,7 @@ std::set<int> Observations::filterByCarrierPhase()
       // wrong data
       if (std::abs(obs_sat.L[0]) < 1e-12)
       {
-        std::cout << "Discarding sat " << sat_number << ": wrong carrier phase data: " << obs_sat.L[0] << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": wrong carrier phase data: " << obs_sat.L[0] << std::endl;
         remove_sats.insert(sat_number);
       }
     }
@@ -316,7 +316,7 @@ std::set<int> Observations::filterByConstellations(const int& navsys)
       int sys = satsys(obs_sat.sat, NULL);
       if (!(sys & navsys))
       {
-        std::cout << "Discarding sat " << sat_number << ": not selected constellation " << sys << " - mask: " << navsys << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": not selected constellation " << sys << " - mask: " << navsys << std::endl;
         remove_sats.insert(sat_number);
         continue;
       }
@@ -349,7 +349,7 @@ std::set<int> Observations::filterByElevationSnr(const Eigen::Vector3d& x_r,
       double elevation = computeSatElevation(x_r, sats_pos.at(sat_number));
       if (elevation < elmin)
       {
-        std::cout << "Discarding sat " << sat_number << ": low elevation " << elevation << " - min: " << elmin << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": low elevation " << elevation << " - min: " << elmin << std::endl;
         remove_sats.insert(sat_number);
         continue;
       }
@@ -357,7 +357,7 @@ std::set<int> Observations::filterByElevationSnr(const Eigen::Vector3d& x_r,
       // snr TODO: multifrequency (2nd param and 3rd idx)
       if (testsnr(0, 0, elevation, obs_sat.SNR[0] * 0.25, &snrmask) == 1)
       {
-        std::cout << "Discarding sat " << sat_number << ": snr test " << std::endl;
+        //std::cout << "Discarding sat " << sat_number << ": snr test " << std::endl;
         remove_sats.insert(sat_number);
       }
     }