png AER,BC,BCPOM,DMS,DUST,METEO,POM,SO2,SO4,SS ANGSTROM,AVE,BUD,CCFD,CHEAQP,CHEGP,CHEP,CONC1000,CONC500,CONCZON,EMI,EMICHEP,ER3D1000,ER3D500,ERGT053D1000,ERGT053D500,ERLT053D1000,ERLT053D500,LOAD,LOAD05,LOAD05D,LOAD125,LOAD125D,LOADCOA,LOADCOAD,LOADD,OD550D,OD865D,PREC,RH1000,RH500,SCONCD,SEDDRY,WET an2000 mALLYEAR ps