Hi,
you could download datas and store them into a json file, wich could be easier to process after with Processing, but you loose the “live” aspect, if it’s important. I saw on the site that the API can send you datas in json format, so I suppose the data you will be able to download manually will be in json also. It’s quite “easy” to parse a json file because it’s constructed as following :
And so on. Keys permits to target one value specifically, or one array/object. So if I want to access to key_2-2 I will write :
myJson.key_2.key_2-2
But if you are “below the beginner level”, there is no way wich will be really easy, parsing data is always a pain when you are currently learning the basis of code.
But for your purpose, it seems to be more appropriate to use p5js. You could easilly access to the API , if the live aspect is important.