Table 1 Dependent variables.

From: The trilemma of sustainable industrial growth: evidence from a piloting OECD’s Green city

Year

Air pollutants

Variable

Measuring unit

Description

1967–2015

Falling dust particles

Dustper

ton/km2/month/person

The amount of falling dust particle per capita

1970–2015

Nitrogen dioxide

NO2per

ppm/person

The concentration of NO2 per capita

1971–2015

Photochemical oxidant

Oxper

ppm/person

The concentration of Ox per capita

1975–2015

Carbon monoxide

COper

ppm/person

The concentration of CO per capita

1967–1999

Sulfur oxides

SOxper

mg/100 cm2/day/person

The concentration of SOx per capita