Shell Programming and Scripting

Hello,

I have a text file containin 4 lines which are repeated along the file, ie

the file looks like this:

16:20:12.060769 blablabla 40
16:20:12.093199 blablabla 640
16:20:12.209003 blablabla 640
16:20:12.273179 blablabla 216
16:20:27.217444 blablabla 40
16:20:27.235410 blablabla 640
16:20:27.327552 blablabla 640
16:20:27.395484 blablabla 216

.......

I want to read the file line by line, take the first word of each one, ie the date, conver it to ms, then stock it in tables, I will have 4 tables, T1 containing the dates of 1,5,9 ...lines

T2: 2,6.. lines
T3: 3,7... lines
T4: 4,8... lines

ANy help please??

This makes a list of ms

Code:

   tr -s '[:punct:]' ' ' <inputfile | \
   awk '{sum=$1*3600000 
          sum+=$2*60*1000
          sum+=$3*1000 
          sum+=$4/1000 
          printf("%12.0f\n", sum)}'

I'm not clear about separation.

Thanks so much,

Just this makes only the conversion , but what about the tables? and how will I make difference between the lines ?