There are two files used in this exercise. Both of them can be downloaded from Kaggle (https://www.kaggle.com/berkeleyearth/climate-change-earth-surface-temperature-data) or from the GitHub repository.
If you are using the repository, the data file can be located inside Chapter 14, Modeling Weather Data Points with Python. As always, let's start running iPython Notebook. The instructions can be found in Chapter 6, Modeling Structured Data.