[Majora320]

I tried again and it worked this time. I do get these two errors upon loading the page, though:

  Error: <line> attribute x1: Expected length, "NaN".
  Error: <line> attribute x2: Expected length, "NaN".

[econonut]

I think the error is coming from pressing space before pressing C. I made the that mistake multiple times after lining up my shot and had to refresh the page so I could try again.

[vinaypai]

It's unrelated. Even though the prompt says to press C, pressing space actually has the same effect if you're standing up.

[vinaypai]

That's a bug, but fairly benign. It's happens while trying to render the chart with no prior data, so the range ends up being Mean. It doesn't affect anything though.