what is the difference between the number of medals earned by the highest-earning country and the lowest-earning country?
4
Rank Nation Gold Silver Bronze Total
1 Russia 3 0 2 5
2 Italy 1 1 0 2
3 Finland 0 1 0 1
3 Germany 0 1 0 1
3 Switzerland 0 1 0 1
6 France 0 0 1 1
6 Georgia 0 0 1 1
Total 4 4 4 12
csv/204-csv/297.tsv