data entry

inserting data from a tool that we have access to and inputting that data into an excel file, look at the attached graph and tell me the date that there was a significant change in traffic and how you would you find would you fill up this excel file - https://docs.google.com/spreadsheets/d/1YICfi4NXMTIJpmaHkBncX4n1994TecWSBeC7rwczLe8/edit?usp=sharing

Need to do it for 200 apps