Index: /trunk/psphot/src/psphotApResid.c
===================================================================
--- /trunk/psphot/src/psphotApResid.c	(revision 19949)
+++ /trunk/psphot/src/psphotApResid.c	(revision 19950)
@@ -22,5 +22,12 @@
     bool measureAptrend = psMetadataLookupBool (&status, recipe, "MEASURE.APTREND");
     if (!measureAptrend) {
-      return true;
+	// save nan values since these were not calculated
+	psMetadataAdd (recipe, PS_LIST_TAIL, "SKYBIAS",  PS_DATA_F32 | PS_META_REPLACE, "aperture sky bias",   NAN);
+	psMetadataAdd (recipe, PS_LIST_TAIL, "SKYSAT",   PS_DATA_F32 | PS_META_REPLACE, "aperture-determined saturation",   NAN);
+	psMetadataAdd (recipe, PS_LIST_TAIL, "APMIFIT",  PS_DATA_F32 | PS_META_REPLACE, "aperture residual",   NAN);
+	psMetadataAdd (recipe, PS_LIST_TAIL, "DAPMIFIT", PS_DATA_F32 | PS_META_REPLACE, "ap residual scatter", NAN);
+	psMetadataAdd (recipe, PS_LIST_TAIL, "APLOSS",   PS_DATA_F32 | PS_META_REPLACE, "aperture loss (mag)", NAN);
+	psMetadataAdd (recipe, PS_LIST_TAIL, "NAPMIFIT", PS_DATA_S32 | PS_META_REPLACE, "number of apresid stars", 0);
+	return true;
     }