Rowridge transmitting station

Columns: Frequency | UHF | kW | Service | System
471.25 MHz | 21 | 500 | Channel 4 | PAL System I | 489.833 MHz | 23- | 20 | BBC ( Mux 1 ) | DVB-T | 495.25 MHz | 24 | 500 | BBC Two | PAL System I | 513.833 MHz | 26- | 20 | Arqiva ( Mux C ) | DVB-T | 519.25 MHz | 27 | 500 | ITV1 ( Meridian until 2002 ) | PAL System I | 530.000 MHz | 28 | 20 | Digital 3 & 4 ( Mux 2 ) | DVB-T | 546.000 MHz | 30 | 20 | SDN ( Mux A ) | DVB-T | 551.25 MHz | 31 | 500 | BBC One | PAL System I | 562.166 MHz | 32+ | 20 | BBC ( Mux B ) | DVB-T | 570.166 MHz | 33+ | 20 | Arqiva ( Mux D ) | DVB-T

Example questions:
Who owns the Rowridge transmitting station that broadcasts on channel 21 ? | In what village is channel 26 's Rowridge transmitting station located ? | When did the Rowridge transmitting station that broadcasts on channel 24 start airing in color ? | When was the Rowridge transmitting station associated with channel 24 launched ?

Answers:
Channel Four Television Corporation | Crawley | 1 July 1967 | 20 April 1964