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The solution comes as two separate downloads
SC Excel DTC AddIn - real time quote and trade updates, data comes from DTC and does not rely on a chart
SC Excel Cht AddIn - real time + historical data, data comes from a chart and is bar based
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For more details on the DTC AddIn, see here: SC Excel Dtc AddIn (Beta3)
SC Excel Cht AddIn
Use this AddIn to access data that is chart based. Some example examples include OHLC, subgraphs and volume. This AddIn requires a chart to be open with the relevant bar periods and studies applied. In general, any subgraph can be exported to exported to Excel.
For more detail, see here: SC Excel Cht AddIn (Beta3)