problem with sql

Hi list,

I think that my head will exploit, I can't resolve this problem and I hope
that somebody can help me.
My data base stores the statistics of ping that are generated every minute.
For a day I have 1440 registers, I want to group them every 5 minutes.
I use this:
hb#select sum(tras), sum(lost), avg(min), avg(prom), avg(max) from simon
where fecha='2002-05-31' and ip='166.114.214.22' and hora between '00:00'
and '00:05';

This work for five register, but i like that this function as a bucle every
5 minutes for example in the next report the interval of hora between
'00:05' and '00:10' the next hora between '00:10' and '00:15'.....until
arrive hora between '23:55' and '24:00'

If somebody can help me I will thankfull

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