Index: trunk/Ohana/src/opihi/cmd.astro/spec.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.astro/spec.c	(revision 2843)
+++ trunk/Ohana/src/opihi/cmd.astro/spec.c	(revision 4689)
@@ -91,5 +91,5 @@
     }
     fsort (buffer, Nring);
-    for (Npts = sky = 0, i = 0.25*Nring; i < 0.75*Nring; i++, Npts += 1.0) {
+    for (Npts = sky = sky2 = 0, i = 0.25*Nring; i < 0.75*Nring; i++, Npts += 1.0) {
       sky += buffer[i];
       sky2 += buffer[i]*buffer[i];