3663135 WSPM wood smoke particulate matter 6 3663141 WSPM water soluble particulate matter 1 3663142 WSPM wavelet based SPM 1 3663138 WSPM Wavelet-based statistical parametric mapping 1 3663139 WSPM weighted shortest path method 1 3663140 WSPM weighted spatial probability model 1 3663137 WSPM wood smoke PM 1