From 161f456101eac447547d45a83ea3fc25d90acdd1 Mon Sep 17 00:00:00 2001
From: Joe Taylor <joe@princeton.edu>
Date: Fri, 23 Feb 2024 14:42:09 -0500
Subject: [PATCH] Tweaks to sfox_sync routine.

---
 lib/superfox/sfox_sync.f90 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/superfox/sfox_sync.f90 b/lib/superfox/sfox_sync.f90
index e91da4494..0149a8b2b 100644
--- a/lib/superfox/sfox_sync.f90
+++ b/lib/superfox/sfox_sync.f90
@@ -34,12 +34,13 @@ subroutine sfox_sync(crcvd,fsample,isync,f,t)
 
   pmax=0.
   ntol=100
-  iz=nint(ntol/df)
+  iz=nint(ntol/df)+2
   i0=nint(1500.0/df)
   ipk=-999
   jpk=-999
   jz=nsz-8*NS
   allocate(ccf(-iz:iz,1:jz))
+  ccf=0.
   do j=1,jz
      do i=-iz,iz
         p=0.