The dataset used in the paper that proposed Donut

[heyanyidui]

In the paper: 《Unsupervised Anomaly Detection via Variational Auto-Encoder for Seasonal KPIs in Web Applications》

It says that at $4 "We obtain 18 well-maintained business KPIs ... from a large Internet company."

What's that ?

I hope I could know which dataset is used in this paper . Thank you very much.