1) Why in the rolling intrinsec algo there is a profit in EUR ```python "profit": [-current_buy_qh[i].value() * prices_qh.loc[i, "price"] / 4], ``` and the pnl in EUR/h ```python pnl = buy_volume * (-1) * vwap_buy + sell_volume * vwap_sell ``` Is it an error? 2) To be sure, in transaction_data.csv, Volume is in (MW) or in (MWh)?