What are Bharat emission standards?

Euro norms define the maximum limit of pollutant that a vehicle can emit. (CO2, nitrogen oxide, sulfur and suspended particulate matter)
If vehicle emits more than this limit, it cannot be sold in Europe.
In India, we follow Euro norms under the label “Bharat stage” norms. we are gradually implementing them in more and more cities
higher stage means less emission (just for reference, exact numbers not important for exam)
Euro normBharat Stage limit of RSPM* India implements from
I (1) 0.14 2000: nation wide
II (2) 0.08 2005: nation wide
III (3) 0.05 2010: nation wide
IV (4) 0.025
2010:
2011: 7 cities
2014: 24 more cities#
2017: (All India)#
V (5) 0.005 2022 (All India)#
VI (6) 0.0025 after 2024 (All India)#