use HWPREDICT

graph

@@ -309,19 +309,26 @@ else
 		-w $graph_width					\
 		-v $graph					\
 		-s $start -e $end				\
-		DEF:data=$rrdfile:$graph:MAX:step=3600	\
+		DEF:data=$rrdfile:$graph:AVERAGE:step=3600	\
 		DEF:predict=$rrdfile:$graph:HWPREDICT		\
+		DEF:dev=$rrdfile:$graph:DEVPREDICT		\
 		DEF:fail=$rrdfile:$graph:FAILURES		\
+		CDEF:predup=predict,dev,2,*,+			\
+		CDEF:predlow=predict,dev,2,*,-			\
+		CDEF:predarea=predup,predlow,-			\
 		VDEF:intercept=data,LSLINT			\
 		VDEF:growth=data,LSLSLOPE			\
 		CDEF:pred=data,POP,COUNT,growth,*,intercept,+	\
-		"${thresholds[@]}"				\
-		LINE1:predict#000000				\
-		LINE1:pred#FFFF00				\
 		"${draw[@]:-AREA:data#00BD27}"			\
+		LINE1:predlow#00A0A0::dashes=on			\
+		AREA:predarea#00A0A030:Pred:STACK		\
+		LINE1:predup#00A0A0::dashes=on			\
+		LINE1:pred#FFFF00:Trend\\n			\
+		"${thresholds[@]}"				\
 		TICK:fail#ffffa0:1.0				\
 		VRULE:$now#000000				\
 		'GPRINT:data:MIN:min %6.2lf%S'			\
+		'GPRINT:data:AVERAGE:\tavg %6.2lf%S'		\
 		'GPRINT:data:MAX:\tmax %6.2lf%S'		\
 		'GPRINT:growth:\tgrowth %6.2lf%s/h\n'
 fi