Index: tools/stat.py
===================================================================
--- tools/stat.py	(revision 8d90b6bfdc3382f2aed883b53023a88ef54e4c88)
+++ tools/stat.py	(revision c60a664fdbecd8c57b45864b650e615f9927c95b)
@@ -11,11 +11,11 @@
 		content = f.readlines()
 		content = [x.strip() for x in content]
-		content = [int(x) for x in content]
-		content.remove(max(content))
-		content.remove(min(content))
-		med = numpy.around( numpy.median(content), decimals=1)
-		avg = numpy.around( numpy.mean  (content), decimals=2)
-		std = numpy.around( numpy.std   (content), decimals=2)
-		print "median {0} avg {1} stddev {2}".format( med, avg, std )
+		content = [float(x) for x in content]	# expect floating-point strings
+		content.remove(max(content))		# need at least 4 data values because
+		content.remove(min(content))		# the max and min values are removed
+		med = numpy.median(content)
+		avg = numpy.mean  (content)
+		std = numpy.std   (content)
+		print "median {0:.1f} avg {1:.1f} stddev {2:.2f}".format( med, avg, std )