Get records for every minute

Hello All,

I have a table which has cyclecount and Stamp columns. 

When cyclecount = 1 i will get records for every 20seconds

when cyclecount = 15 i will get records for every 5minutes

when cyclecount = 45 i will get records for every 15minutes 

So, How can i write a query to get every 1minute records? 

Please help me on this issue. 

Thanks, Shyam.