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coefficients for T55; and A(4),and B(4) are the regression <br /> coefficients for SS. All these data elements should be separated <br /> by commas. If a node has missing regression coefficients, these <br /> should be e nter ed as zero. If a node has no regression- <br />~ caefficiens informatSon, this node probably should not be <br />~ included in A COR. During WATHALC module execution, if a node is <br /> not found in the ~COR filer ehe Following default actions will <br />~ occur. <br /> 1. If the node is a 'begin" (upstream-control) node, all <br />~ <br /> concentration values including SC will be initialized to zero. <br />) 2. If the node i5 not a begin node, all the concentration values <br /> including SC will be carried over from the immediate upstream <br />~ <br /> node. If there are more than one upstream node, a flowrate- <br />~ weighted average will be used. If the sum of the flowrates of <br /> the upstream nodes is zero, then the weighted average will be <br /> <br />• defaulted to zero. <br /> If ICHl2)=1r the concentrations of mayor i~rrs (Ca, Mg, Nar <br /> k, HC03, S04 and Cl) and DS will be computed as functions of SCr <br />) <br /> according to the equation C = A + SC + B. C is either a mayor <br /> ion concentration or DS concentration; and A and B are the <br />associated regression coefficients. All Sixteen regression <br />1 <br />coefficients (8 pairs) should be supplied in file SCCOR according <br />~ to the following formats: <br />~ TITLE ~ ~• <br />IDr A(1)r H(1)r A(2)r B(2Ir ...r A(7)r Bt7)r A(8)r B(8) '" <br /> <br />The first line contains the title which describes the data <br />file. The maximum length of TITLE is 80 characters. The ID is <br />the ID of a node with 09 omitted. The ID's iri the file should br <br />Ex. 13-8 <br />