Ask and Bid of a previous bar

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How do I determine the ask and bid of a previous bar?

Much thanks in advance,

Yarns

[Ray]

The historical bar prices are the bid at the open, the high, the low, and the close. Ask is not saved.

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phy:

The historical bar prices are the bid at the open, the high, the low, and the close. Ask is not saved.

Thanks. I appreciate all the help I see you give to all the users of the site.

Yarns