So what I do is I take, and that's exactly what I did in the spreadsheet. Let me scroll down. This might be taxing my computer by taking the screen capture with it. So what I did is I evaluated the cumulative distribution function at 1, which would be right there. And I evaluate the cumulative distribution function at minus 1, which is right there. And the difference between these two, I subtract this number from this number and that tells me essentially the probability that I'm between those two numbers, or another way to think about it, the area right here. And I really encourage you to play with this and explore the Excel formulas and everything.