Index: trunk/ppStats/src/ppStatsFromMetadataStats.c
===================================================================
--- trunk/ppStats/src/ppStatsFromMetadataStats.c	(revision 19965)
+++ trunk/ppStats/src/ppStatsFromMetadataStats.c	(revision 19966)
@@ -2,6 +2,6 @@
 
 // calculate the stats for the non-constant entries (already calculated)
-bool ppStatsFromMetadataStats(psArray *entries) {
-
+bool ppStatsFromMetadataStats(psArray *entries)
+{
     for (int i = 0; i < entries->n; i++) {
         ppStatsEntry *entry = entries->data[i];
@@ -18,5 +18,5 @@
         psStatsOptions option;
         if (!strcasecmp (entry->statistic, "RMS")) {
-            option = psStatsOptionFromString ("ROBUST_MEDIAN");
+            option = psStatsOptionFromString ("ROBUST_STDEV");
         } else if (!strcasecmp (entry->statistic, "SUM")) {
             option = psStatsOptionFromString ("SAMPLE_MEAN");
@@ -35,5 +35,5 @@
         double value;
         if (!strcasecmp (entry->statistic, "RMS")) {
-            value = sqrt(value);
+            value = stats->robustStdev;
         } else if (!strcasecmp (entry->statistic, "SUM")) {
             value = stats->sampleMean * entry->vector->n;