Characteristic and Prediction of Carbon Monoxide Concentration using Time Series Analysis in Selected Urban Area in MalaysiaHazrul Abdul Hamid, Ahmad Zia Ul-Saufie Mohd Japeri and Hasfazilah AhmatMATEC Web Conf., 103 (2017) 05001DOI: https://doi.org/10.1051/matecconf/201710305001