Get Infoworks Result Average Above Zero

Usage

hsGetIwResultAvgAboveZero(src, type)

src: either full path to mdb or to directory in which InfoWorks result files (csv) are located
type: one of "flow", "BOD_tot", "COD_tot", "NH4N", "TKN_tot", "TP_dis", "TP_tot", "TSS"