Two questions decide the year. First, how many storm days the city gets. Second, how much the book pays on a storm day. Each answer takes one of three historical values, so there are nine outcomes. Every outcome is a distribution, not a point: click a leaf to see the histogram and the storm days behind it.
Realized payouts of the sensors live in each year, on the one-payout-a-year basis, against today's price pro-rated to the data window. Below each year, the same nine scenarios rebuilt from that year's storm days alone, so you can see what a heavier or lighter version of that year would have cost. Click any cell for its histogram.