I hope you did your homework. You should have had a crack at finding the maximum temperature for the year for each weather station instead of a minimum temperature, using our min-temperatures Python script as a starting point. If you haven't, go give it a try! Really, the only way you're going to learn this stuff is by diving in there and messing with the code yourself. I very strongly encourage you to give this a try-it's not hard. If you have done that though, let's move forward and take a look at my results. We can compare that to yours and see if you got it right.

Hopefully, you didn't have too much of a hard time figuring out the maximum temperature observed at the each weather station for the year 1800; it just involved a few changes. If you go to the download package for this book, you can download my solution to it, which is the max-temperatures script. If you like, you can throw that into your SparkCourse directory and compare your...