javascript - How to add Random time stamps in zoomable area chart in highcharts? -

i want plot data against time zoom in area chart. problem not contain reading every sec basis.

pointinterval: intervals, pointstart:startdate, data:energydata 

i using above thing in highcharts. when give reading every sec plots right. want plot random time. don't have readings every sec instead have 30 sec each.

in case plots x-axis wrong. can give data

[time1,value1],[time2,value2],....