(iii) In the case of the secondary transmission of a primary transmitter that is a television broadcast station pursuant to the late-night or specialty programming rules of the Federal Communications Commission, or the secondary transmission of a primary transmitter that is a television broadcast station on a part-time basis where full-time carriage is not possible because the cable system lacks the activated channel capacity to retransmit on a full-time basis all signals that it is authorized to carry, the values for independent, network, and noncommercial educational stations set forth in subparagraph (A), as the case may be, shall be multiplied by a fraction that is equal to the ratio of the broadcast hours of such primary transmitter retransmitted by the cable system to the total broadcast hours of the primary transmitter.