Network Analyzer data export

Hello. I have a question about the HP8753E Network Analyzer data export. It seems the data files it creates (no matter data array or raw data) have real and image part of the scattering parameter. But it seems it is not exactly the same as I observed in the network analyzer itself...... If I want to use these data in computer, how do I do??? Any reference about the data/raw data/ format data and the s-parameters' relationship??? Thanks in advance.

Assuming that a full two port calibration was done you should be able to save the data file in Touchstone format (ie. file name ends with .s1 or .s2) which should account for any port extension or delay corrections made after calibration.
To get Touchstone format you need go to the define disk save format menu and set to "save using ascii" and "save only data".
Also you may be able to get the analyser to save in MAG/ANG or DB/ANG formats by setting the display formats of each of the measurements accordingly.
If you manage to save in MAG/ANG format the file should look something like;

# HZ S MA R 50
! Network Analyzer HP8753E
50000000 0.789 -140 26.35 100 0.025 15 0.666 -141
100000000 0.800 -157 13.35 87 0.025 -1 0.675 -157
150000000 0.825 -164 8.88 80 0.024 -6 0.667 -162

where the above data is in the following format;
Freq mag(s11) ang(s11) mag(s21) ang(s21) mag(s12) ang(s12) mag(s22) ang(s22)