Index: trunk/FACT++/spectrum/summary-sim.sql
===================================================================
--- trunk/FACT++/spectrum/summary-sim.sql	(revision 19982)
+++ trunk/FACT++/spectrum/summary-sim.sql	(revision 19983)
@@ -72,4 +72,6 @@
       TrigSumW/SimSumW         AS  TriggerEfficiencyW,
 
+      SignalN  - BackgroundN   AS  ExcessN,
+
       SignalW  - BackgroundW   AS  ExcessW,
       SignalW2 + BackgroundW2  AS  ExcessW2
@@ -92,4 +94,5 @@
       SQRT(SignalN)                          AS  ErrSignalN,
       SQRT(BackgroundN)                      AS  ErrBackgroundN,
+      SQRT(SignalN + BackgroundN)            AS  ErrExcessN,
 
       SimSumW              /Width/AreaTime   AS  SimFluxW,