TOP/TCP stands for Theoretical Open Price and Theoretical Closing Price, whereas TOV/TCV stands for Theoretical Open Volume and Theoretical Closing Volume.
The TOP/TCP & TOV/TCV values will be displayed during the Opening and Closing Auctions. When the market is open, these values will be shown as "-" during continuous trading.
If there are no Buy or Sell orders, or no matching orders for a company during auctions, the TOP/TCP & TOV/TCV values will be shown as "-".