Table:
text: KTLF
Translators
Translators
Call_sign Frequency_MHz City_of_license ERP_W Class_ FCC_info
K211EQ 90.1 New Castle, Colorado 19 D FCC
K204EX 88.7 Paonia, Colorado 62 D FCC
K206BU 89.1 Seibert, Colorado 250 D FCC
K215DA 90.9 Silver Cliff, Colorado 250 D FCC
K218DB 91.5 Vilas, Colorado 250 D FCC
K207BK 89.3 Walsh, Colorado 250 D FCC
K220DE 91.9 Windsor, Colorado 10 D FCC
K248AS 97.5 Woodland Park, Colorado 250 D FCC

Question: What is the average ERP W for callsign KTLF among translators of K207BK?