pollutant,Sun-Thu,Fri-AM,Fri-PM,Sat
Benzene,0.22,0.18,0.15,0.16
CO,0.54,0.51,0.5,0.5
NO,9.21,7.94,2.44,2.52
NO2,17.18,13.6,11.95,9.33
NOX,26.39,21.53,14.39,11.85
PM2.5,16.92,19.97,20.47,22.47
Toluene,0.67,0.41,0.26,0.31