pollutant,Sun-Thu,Fri-AM,Fri-PM,Sat
NO,4.29,3.31,2.5,2.87
NO2,9.65,6.28,6.62,5.66
NOX,13.94,9.6,9.12,8.53
PM10,53.13,51.89,71.73,77.02
PM2.5,15.15,16.52,21.02,21.44