And a fine time was had by all!
There seems to an interesting split between those who chose to work with wide data, those enlightened individuals who worked with the long form data.
Not that I'm judging!
After failing the Expert exam due to time mismanagement I am hitting the weekly challenges as fast as I can go. This is not pretty but stream-of-consciousness got me to the end and the correct answer on my first try. Also, I plan on putting a comment in on every challenge to record my time, no matter how ugly.
Now that I've looked at other entries I see that using a stopwatch on one's phone is a great way to get an accurate measure. I went from file creation time to time of the run and rounded up to the next whole minute.