We explored Citi Bike System Data to see if there was a significant difference bike ride time duration, between subscribers and customers. In order to account for both warmer and colder weather, our dataset incorporated the months of January and August. In our analysis, we used CSV files that recorded the Citi Bike Daily Ridership and Membership Data. 
With regard to processing, we siphoned only the variables of interest: time and customer type. Then, we grouped the two samples and calculated their means to understand the difference. 
Below is a figure to describe the data behind bike ride time duration.