Difference value in pie chart and line line graph for the same query

HI,
I am using line graph and pie chart for the same metrics, but I observe for one field values are not same in line graph and pie chart. The query I am using is :
SELECT mean(“Percent_Idle_Time”) FROM “win_cpu” WHERE “host” =~ /^$appserver$/ AND $timeFilter GROUP BY time(5m)
I see % idel time in pie chart is - 86.76% while for line graph it shows current value as - 93% with the same query. Is this the bug or am I missing something?

Thanks,
Yashoda

Depends on your query and how many datapoints both queries get and what stat / panel options you have

I used same query for both the pane but I see different value in pie chart and different in line graph.
Query used is: SELECT mean(“Percent_Idle_Time”) FROM “win_cpu” WHERE “host” =~ /^$appserver$/ AND $timeFilter GROUP BY time(5m)
eg : While using pie chart I get %ideal time :96.25% while for
line graph , %ideal time :98% with same query. Not sure why 2 different values for the same query .