These data reproduce Figure III in the paper, entitled, "Subways and CO2 emissions: A global analysis with satellite data"
The table presents three scenarios for Functional Urban Areas that incorporate different assumptions about the Social Cost of Carbon (SCC) and per-km unit cost of subway installation (UC). The table labels the three scenarios “Pessimistic” (SCC, US$50 per ton; UC, US$280 million per km);” "Mid-Range” (SCC, US$100 per ton; UC, US$200 million per km); and “Optimistic” (SCC, US$150 per ton; UC, US$140 million per km).