Table:
text: European emission standards
Emission standards for Large Goods Vehicles
Euro norm emissions for category N3, 
 EDC 
 , (2000 and up)
Standard Date_ CO_g_kWh NO_x_g_kWh HC_g_kWh PM_g_kWh
Euro 0 1988–1992 12.3 15.8 2.6 none
Euro I 1992–1995 4.9 9.0 1.23 0.40
Euro II 1995–1999 4.0 7.0 1.1 0.15
Euro III 1999–2005 2.1 5.0 0.66 0.1
Euro IV 2005–2008 1.5 3.5 0.46 0.02

Question: How many different standards have a PM of 0.02 g/kWh under European emission standards?

Question: What is the HC for the Euro I standard under the European emission standards?

Question: What is the HC for the standard with NO x of 7.0 g/kWh for European emission standards?

Question: How high is the PM for the standard with 12.3 g/kWh CO from European emission standards?

Question: What is the standard NO with HC of 1.23 g/kWh under European emission standards?