Disappointed... "so-called" tick data is 1-min bar or series of ticks WITHOUT seconds (00 in all timestamps within minute)
It is normal to have multiple ticks within the same one minute time stamp. Hour and minute only; no seconds.
See example tick data below from today's session:
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,1
04/16/2010,1559,1189.00,1189.00,1189.00,1189.00,20,0
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,1
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,1
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,20
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,24
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,44
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,44
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,138
04/16/2010,1559,1188.75,1188.75,1188.75,1188.75,0,12
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,4,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,10,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,375,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,45,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,70,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,20,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,30,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,1,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,35,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,4,0
04/16/2010,1600,1189.00,1189.00,1189.00,1189.00,10,0