Question: How many different standards have a PM of 0.02 g/kWh?
SQL: SELECT COUNT("Standard") FROM "1-2780146-6" WHERE "PM (g/kWh)" = '0.02';

Question: What's the HC for the Euro I standard?
SQL: SELECT "HC (g/kWh)" FROM "1-2780146-6" WHERE "Standard" = 'Euro I';

Question: What's the HC for the standard with NO x of 7.0 g/kWh?
SQL: SELECT "HC (g/kWh)" FROM "1-2780146-6" WHERE "NO x (g/kWh)" = '7.0';

Question: What's the PM for the standard with 12.3 g/kWh CO?
SQL: SELECT "PM (g/kWh)" FROM "1-2780146-6" WHERE "CO (g/kWh)" = '12.3';

Question: What's the NO of the standard with HC of 1.23 g/kWh?
SQL: SELECT "NO x (g/kWh)" FROM "1-2780146-6" WHERE "HC (g/kWh)" = '1.23';