Index: /trunk/BNC/RTCM3/ephemeris.cpp
===================================================================
--- /trunk/BNC/RTCM3/ephemeris.cpp	(revision 4026)
+++ /trunk/BNC/RTCM3/ephemeris.cpp	(revision 4027)
@@ -68,5 +68,10 @@
   _L2PFlag  = 0.0;
 
-  _ura      = ee->URAindex;
+  if (ee->URAindex <= 6) {
+    _ura = ceil(10.0*pow(2.0, 1.0+((double)ee->URAindex)/2.0))/10.0;
+  }
+  else {
+    _ura = ceil(10.0*pow(2.0, ((double)ee->URAindex)/2.0))/10.0;
+  }
   _health   = ee->SVhealth;
   _TGD      = ee->TGD;