how to turn raw data into a chart

[robc1122]

If I have raw trading data pulled from an API, whats the best way for me to convert it into a visible chart?  The main reason Im doing this is that I wanted to be able to chart data down to the second, not just the minute like charts on tradingview and other sites allow.  Im also wondering if theres any other good ways to compare two sets of data.  For example I pulled data from XBTM18 and XBTU18 (bitmex futures contracts for btc June and September) and I want to be able to see what the difference in price was down to the second and I cant figure out a good way to do this.  Any suggestions are greatly appreciated, thank you!