diff --git a/raw.cc b/raw.cc
index 30fdccc1f2eab8931a1547454cb7b2f2e9a740fc..847ac306a058a8943d14336da95f4dd515f4aec1 100644
--- a/raw.cc
+++ b/raw.cc
@@ -79,7 +79,7 @@ int trg_default = 85;
 
 // FOURTH BIN TRIGGER
 int qtr_level[CHANNELS];
-int qtr_default = 64;
+int qtr_default = 55; // defined by Luis Otiniano, using typical fluctuations at baseline
 
 // SATURATED PEAKS
 int sat_level[CHANNELS];