diff --git a/Analysis/Tasks/PWGLF/NucleiSpectraEfficiency.cxx b/Analysis/Tasks/PWGLF/NucleiSpectraEfficiency.cxx
index 19753e7b12643..9ddde2c3734ba 100644
--- a/Analysis/Tasks/PWGLF/NucleiSpectraEfficiency.cxx
+++ b/Analysis/Tasks/PWGLF/NucleiSpectraEfficiency.cxx
@@ -45,8 +45,8 @@ void customize(std::vector<o2::framework::ConfigParamSpec>& workflowOptions)
 
 #include "Framework/runDataProcessing.h" // important to declare after the options
 
-struct NucleiSpectraEfficienctyVtx {
-  OutputObj<TH1F> histVertexTrueZ{TH1F("histVertexTrueZ", "MC true z position of z-vertex; vertex z (cm)", 100, -20., 20.)};
+struct NucleiSpectraEfficiencyVtx {
+  OutputObj<TH1F> histVertexTrueZ{TH1F("histVertexTrueZ", "MC true z position of z-vertex; vertex z (cm)", 200, -20., 20.)};
 
   void process(aod::McCollision const& mcCollision)
   {
@@ -103,7 +103,7 @@ struct NucleiSpectraEfficiencyRec {
     AxisSpec ptAxis = {ptBinning, "#it{p}_{T} (GeV/#it{c})"};
     AxisSpec centAxis = {centBinning, "V0M (%)"};
     //
-    spectra.add("histRecVtxZ", "collision z position", HistType::kTH1F, {{600, -20., +20., "z position (cm)"}});
+    spectra.add("histRecVtxZ", "collision z position", HistType::kTH1F, {{200, -20., +20., "z position (cm)"}});
     spectra.add("histRecPt", "reconstructed particles", HistType::kTH1F, {ptAxis});
     spectra.add("histTpcSignal", "Specific energy loss", HistType::kTH2F, {{600, -6., 6., "#it{p} (GeV/#it{c})"}, {1400, 0, 1400, "d#it{E} / d#it{X} (a. u.)"}});
     spectra.add("histTpcNsigma", "n-sigma TPC", HistType::kTH2F, {ptAxis, {200, -100., +100., "n#sigma_{He} (a. u.)"}});
@@ -167,7 +167,7 @@ WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
   WorkflowSpec workflow{};
   //
   if (vertex) {
-    workflow.push_back(adaptAnalysisTask<NucleiSpectraEfficienctyVtx>(cfgc, TaskName{"nuclei-efficiency-vtx"}));
+    workflow.push_back(adaptAnalysisTask<NucleiSpectraEfficiencyVtx>(cfgc, TaskName{"nuclei-efficiency-vtx"}));
   }
   if (gen) {
     workflow.push_back(adaptAnalysisTask<NucleiSpectraEfficiencyGen>(cfgc, TaskName{"nuclei-efficiency-gen"}));
diff --git a/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx b/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
index 8939f7c00a765..f2a088cde5c8a 100644
--- a/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
+++ b/Analysis/Tasks/PWGLF/NucleiSpectraTask.cxx
@@ -40,13 +40,14 @@ struct NucleiSpectraTask {
 
   void init(o2::framework::InitContext&)
   {
-    std::vector<double> ptBinning = {0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 2.8, 3.2, 3.6, 4., 5.};
+    std::vector<double> ptBinning = {0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6,
+                                     1.8, 2.0, 2.2, 2.4, 2.8, 3.2, 3.6, 4., 5., 6., 8., 10., 12., 14.};
     std::vector<double> centBinning = {0., 1., 5., 10., 20., 30., 40., 50., 70., 100.};
 
     AxisSpec ptAxis = {ptBinning, "#it{p}_{T} (GeV/#it{c})"};
     AxisSpec centAxis = {centBinning, "V0M (%)"};
 
-    spectra.add("histRecVtxZData", "collision z position", HistType::kTH1F, {{600, -20., +20., "z position (cm)"}});
+    spectra.add("histRecVtxZData", "collision z position", HistType::kTH1F, {{200, -20., +20., "z position (cm)"}});
     spectra.add("histKeepEventData", "skimming histogram", HistType::kTH1F, {{2, -0.5, +1.5, "true: keep event, false: reject event"}});
     spectra.add("histTpcSignalData", "Specific energy loss", HistType::kTH2F, {{600, -6., 6., "#it{p} (GeV/#it{c})"}, {1400, 0, 1400, "d#it{E} / d#it{X} (a. u.)"}});
     spectra.add("histTofSignalData", "TOF signal", HistType::kTH2F, {{600, -6., 6., "#it{p} (GeV/#it{c})"}, {500, 0.0, 1.0, "#beta (TOF)"}});
@@ -94,14 +95,16 @@ struct NucleiSpectraTask {
       nSigmaHe3 += 94.222101 * TMath::Exp(-0.905203 * track.tpcInnerParam());
       //
       spectra.fill(HIST("histTpcSignalData"), track.tpcInnerParam() * track.sign(), track.tpcSignal());
-      spectra.fill(HIST("histTpcNsigmaData"), track.tpcInnerParam(), nSigmaHe3);
+      if (track.sign() < 0) {
+        spectra.fill(HIST("histTpcNsigmaData"), track.pt() * 2.0, nSigmaHe3);
+      }
       //
       // check offline-trigger (skimming) condidition
       //
       if (nSigmaHe3 > nsigmacutLow && nSigmaHe3 < nsigmacutHigh) {
         keepEvent = kTRUE;
         if (track.sign() < 0) {
-          spectra.fill(HIST("histDcaVsPtData"), track.pt(), track.dcaXY());
+          spectra.fill(HIST("histDcaVsPtData"), track.pt() * 2.0, track.dcaXY());
         }
         //
         // store tracks for invariant mass calculation