Fortran PARAMETER statements are also used to specify the array limits for the number of output types (CONC, DEPOS, DDEP, and/or WDEP) available with the ISCST model (NTYP, initially set to 2 for the DOS version and 4 for the EM version); the number of high short term values by receptor to store for the ISCST model (NVAL, initially set to 2 for the DOS version and 6 for the EM version); the number of overall maximum values to store (NMAX, initially set to 50 for ISCST and to 10 for Long Term); and the number of x-coordinates and y-coordinates that may be included in the optional terrain grid file (MXTX and MXTY, initially set to 101 for the DOS version of Short Term, 201 for the DOS version of Long Term, and 601 for the EM version of both models).
In addition to the parameters mentioned above, parameters are used to specify the number of gridded receptor networks in a particular run (NNET), and the number of x‑coordinate (or distance) and y‑coordinate (or direction) values (IXM and IYM) for each receptor network. Initially, the models allow up to 5 receptor networks (of any type), and up to 50 x‑coordinates (or distances) and up to 50 y‑coordinates (or directions). The source arrays also include limits on the number of variable emission rate factors per source (NQF, initially set to 24 for the DOS version of Short Term and 96 for the EM version of Short Term, and to 36 for the DOS version of Long Term and 144 for the EM version of Long Term), the number of sectors for direction‑specific building dimensions (NSEC, initially set to 36 for Short Term and 16 for Long Term), and the number of settling and removal categories (NPDMAX, initially set to 10 for the DOS version of Short Term and 20 for the EM version of Short Term and both versions of Long Term).
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