i.atcorr: adjust spectral response threshold

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72100 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/i.atcorr/iwave.cpp

@@ -7877,7 +7877,7 @@ void IWave::parse()
 
 	    imax = -1;
 	    smax = 0;
-	    sthreshold = 0.005; /* low threshold for filter functions */
+	    sthreshold = 0.01; /* low threshold for filter functions */
 
 	    /* find maximum response */
 	    for(i = 0; i <= 1500; i++) {