00:03:43.180,00:03:46.180
Alan Brammer: https://colab.research.google.com/drive/1CWW0DaiC1UvqHprWqiAN_7gf9zZ4BbCf?usp=sharing

00:20:28.177,00:20:31.177
Heather Cronk: .itertuples() is new to me!