Index: trunk/MagicSoft/Mars/datacenter/macros/fillstar.C
===================================================================
--- trunk/MagicSoft/Mars/datacenter/macros/fillstar.C	(revision 8489)
+++ trunk/MagicSoft/Mars/datacenter/macros/fillstar.C	(revision 8530)
@@ -210,4 +210,7 @@
 
     TString sparkrate = Form("%5.2f", numsparks/effon);
+
+    if (sparkrate.Contains("inf"))
+        sparkrate="NULL";
 
     TGraph *g = (TGraph*)arr.FindObjectInCanvas("Humidity", "TGraph", "MHWeather");