(7)The methods for measuring the amounts to be included as reception and transmission of orders and execution of orders in COH should include specific rules for the case where market prices are not readily available because they are not contained in the orders. It is necessary to reflect the differences between the case of execution of orders and the case of reception and transmission, as prices and timing at which the orders should be recorded for the measuring of COH may differ in each case. Further, in the case of reception and transmission of orders, in particular, the transmitted orders are a better reference for this purpose than the received orders, as the latter may fail to be transmitted.