We’ve plotted the balloon’s descent, and extrapolated the likely box that it came down in.
The pins on the left are the actual positions as transmitted from the radio. The asterisk inside the box is our calculated landing point, and the box itself are the main roads that are roughly 2km to the north, and 3km to the east, west, and south of this point (we believe it is more likely that the balloon drifted further south than it did north.)
Here is a more detailed view of the box:
The city in the upper left corner is Reading, Michigan. This is our new search area. We’ll keep you posted on our progress.