Index: trunk/tools/bills/adddeltacolumns
===================================================================
--- trunk/tools/bills/adddeltacolumns	(revision 39055)
+++ trunk/tools/bills/adddeltacolumns	(revision 39056)
@@ -171,5 +171,5 @@
 apFlux          AP_FLUX		        *zpFactor/expTime
 apFluxErr       AP_FLUX_SIG		*zpFactor/expTime
-apFillF         AP_NPIX                 /(3.14159265359*pow(AP_MAG_RADIUS-0.5,2))
+apFillF         AP_NPIX                 /(3.14159265359*AP_MAG_RADIUS*AP_MAG_RADIUS)
 apRadius        AP_MAG_RADIUS           *abs(PLTSCALE)
 kronFlux        KRON_FLUX		*zpFactor/expTime