Analysis of Carbon Monoxide using Haar Wavelet

Statistical properties using average value, maximum, minimum, variance, standard deviation, coefficient of variation, coefficient of kurtosis and coefficient of skewness of carbon monoxide (CO), recorded at four different locations, namely, the Delhi College of Engineering (DCE), ITO-crossing (ITO), Siri fort (SF) and by mobile van (MV) in Delhi, India, were analysed for 4 years from 2007 to 2010. The 1-dimensional discrete and continuous wavelets analysis in time and frequency domains has been carried out for CO using Haar wavelet at level 3. It has been observed that at DCE, the average concentration of CO decreased from 1385μg/m3 in the year 2007 to 1039 μg/m3 in the year 2010. At ITO, CO level crossed maximum limit of 2,000 μg/m3 for all the 4 years. The CO has moderate positive linear relationship between DCE and ITO and between MV and SF and weak positive correlation between DCE and MV, DCE and SF, ITO and MV and ITO and SF.