About how transform train-ticket‘s data to train data.

[lovemizzle]

Dear author @traceanomaly @Sahandfer @lizeyan @federicozaiter ： Read tarin data: Training set: train_ticket/train.zip, the shape of train data is (100000, 890), what does column 890 mean?Please

[lovemizzle]

I know it means response time, but I do not know each column represents whose response time.