Rain rain go away
I'd estimate there's about 60 hours of painting left to do on my house. Given that it is dark or dewy before and after work, I need approximately 5 weekends worth of painting to get it finished. When you take out soccer on Saturday and Sunday, it starts to become painfully clear why a rainy day puts an awful spanner in the works. A rainy Saturday can easily spoil the weekend, setting back the painting task by a week. And there's no guarantee the following week will be available for painting.
In the theme of the good work over at GraphJam the following relationship occurred to me as I find myself recovering after another week of rain.

It's also my first chance to play with iWork Numbers!