This is a historical data of HangSeng Futures Index based in Hong Kong.
For non traders, the data is a time-series (sequential flow of numbers) describing the HangSeng Futures Index of HongKong.
Every minute one line of data is created.
Each line has :
open : first price at start of that minute
high : highest price during that minute
low : lowest price during that minute
close : last price for that minute time frames
volume : total number of units traded
This is can be called 'raw data' on a 1 minute time frame.