Alastair responded with a five-digit number. This matched one of the labeled dots in the North Sea, between Scotland and Norway. Rufus zoomed in on that and gave it a tap. The result was a spreadsheet-like table of numbers. Left to his own devices for a while, on a larger screen, Rufus might have been able to make sense of it. Up here in bright sun on a screen the size of his hand was a different story. He panned around and stumbled upon a graph. The graph sort of meandered up and down for a while, but trending generally upward. Then at the very end it zoomed up to a high spike and then flatlined.