my query is in 2 hours time graph, minutes should be show in between.

my query is in 2 hours time graph, minutes should be show in between.

am trying to create a new graph in Graph, where i can create. pl guide.
pl refer attachment..

there is no such option..
am working in "dashboard"
how to change the time value in mins, currently vaule showing 60mins gap(like 15:30, 16:30)
Thank You 
Hi
i have added a router interface for monitoring the In and Out traffic.
actual traffic is "4000 Kbps", but in line graph it showing as "400K"
pl help me to change the value..
refer attachment
