It is the data used in your research and analysis. Let me give you an example. For example, a study used questionnaires to collect data. The recovered questionnaire and relevant data extracted from the questionnaire are original data. Your research needs to analyze these data to draw results and conclusions.

I don't know how you study LAN chat tools through your topic alone. I hope you can explain it in more detail. In a word, the data that support you to reach the results and conclusions in the paper research are collectively called original data.

I hope I can help you solve the problem by hand, or you can ask me for details.