 What we did was put a lattice down across the world, a 10 by 10 kilometre lattice, and then we looked at the energy of the hotspots detected by the MODIS satellite. The whole basis of the paper and our database was to say, well, if you sum all of those hotspots in a small area, that's a fire event, and then if you rank all of the fires we could observe in a 12-year period, sum 23 million...