I am using SIPp tool for sip call that gives me a csv stat file (i configured every 5 sec new row is generated) with columns of current calls (integers) like 0,5,12,25,45,60,60,60,59,60,60,45,32,25,15,5,0. above is with 5 calls per sec with max call limit 60(pls ignore missing values in between). So, this would be my y-axis values. For x-axis (this is