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__________________________________________________________________________________________________       NEMA components that were used to generate the charts.  The data is presented in a table, as in the following example. 

The column labeled CLC=1,0=Y,N specifies when significant rollover activity occurred.  When "0," the data is real lead contract data.  When "1," the data is calculated based on the continuous lead contract (CLC) method..

In the below example, when the "0" changes to "1,"  the months column (MO'S) shows both the Jun (J) old lead and the Sep (S)  new  lead contract during the active rollover time.

For trading holidays, a small volume is used along with an OI change of only 1.  This is done to avoid divide-by-zero problems, etc.  The components are zero in this case, which is appropriate.

Recent charts do not include this input data.  The  NEMA .component equations (see About NEMA) can be used to calculate the components.