I have been living in Sydney for the past ten years and been experiencing significant public transport improvements. The notable one is the introduction of Opal Card, a contactless fare collection system. The card makes it easier to travel, as it is acceptable in multiple transport modes.
The Transport for NSW Open Data Hub produces several open data related to Opal Card, including the Opal Trip — Train (https://opendata.transport.nsw.gov.au/dataset/opal-trips-train). I am curious whether I could use this data to answer the following questions: