Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 20490)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 20497)
@@ -3,4 +3,5 @@
 ITER		S32	1		# Number of rejection iterations
 COMBINE.REJ	F32	3.0		# Rejection threshold in combination (sigma)
+COMBINE.SYS	F32	0.08		# Relative systematic error in combination
 MASK.VAL	STR	MASK.VALUE,BAD.WARP	# Mask value of input bad pixels
 MASK.BAD	STR	BLANK		# Mask value to give bad pixels