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Table 1 Measured Variables and units of measurement

From: A comparison of machine learning methods for ozone pollution prediction

Variable

Unit

\(\hbox {PM}_{{10}}\)

\(\mu g/m^{3}\)

\(\hbox {PM}_{2.5}\)

\(\mu g/m^{3}\)

CO

ppm

\(\hbox {NO}_2\)

ppb

\(\hbox {O}_{3}\)

ppb

\(\hbox {SO}_2\)

ppb

absolute humidity

\(g/m^{3}\)

air temperature

\(^{\circ }C\)

ambient pressure

hPa

global radiation

\(W/m^{2}\)

precipitation

\(l/ m^{2}/h\)

relative humidity

%

wind speed

m/s

Wind Direction Correction

Deg