(a description of the data you use and how it is processed. This should include figures (with captions!!) that help visualize and understand the data.)
The Citibike data of August 2017 was selected as the study focus. 
First, based on the start time of each ride, the 2017 August data was divided to 7 days. Then, based on the type of bike riders (user-type), the dataset was further split into two sub-dataset: subscribers and customers.