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  | 
 
  | 
| 
 Code  | 
 Default Width  | 
 Description  | 
| 
 asksize  | 
 8  | 
 Size of ask.  | 
| 
 bidsize  | 
 8  | 
 Size of bid.  | 
| 
 volume  | 
 8  | 
 Trade volume during the period; volume is updated at end of day.  | 
| 
 uvol  | 
 8  | 
 Number of up-ticks during the day; stock volume in up-trades.  | 
| 
 dvol  | 
 8  | 
 Number of down-ticks during the day; stock volume in down trades.  | 
| 
 tvol  | 
 8  | 
 Total volume reported during the day.  | 
| 
 ticvol  | 
 8  | 
 Tic volume at the current price.  | 
| 
 ticvoln  | 
 8  | 
 Tic volume at the last eight prices.  | 
| 
 oi  | 
 8  | 
 Contract open interest on futures.  | 
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