Blaenplwyf transmitting station

Columns: Frequency | UHF | kW | Service | System
471.25 MHz | 21 | 100 | S4C | PAL System I | 482.166 MHz | 22+ | 2 | Digital 3 & 4 ( Mux 2 ) | DVB-T | 495.25 MHz | 24 | 100 | ITV1 Wales ( HTV Wales until 2002 ) | PAL System I | 506.166 MHz | 25+ | 2 | SDN ( Mux A ) | DVB-T | 519.25 MHz | 27 | 100 | BBC Two Wales | PAL System I | 530.166 MHz | 28+ | 2 | BBC ( Mux 1 ) | DVB-T | 538.166 MHz | 29+ | 1 | Arqiva ( Mux C ) | DVB-T | 551.25 MHz | 31 | 100 | BBC One Wales | PAL System I | 562.166 MHz | 32+ | 2 | BBC ( Mux B ) | DVB-T | 570.166 MHz | 33+ | 1 | Arqiva ( Mux D ) | DVB-T | 751.25 MHz | 56 | 4 | Channel 5 | PAL System I

Example questions:
What kW does the Blaenplwyf transmitting station service by frequency located at Crawley Court operate at ? | What is the UHF of the Blaenplwyf transmitting station service by frequency that is wholly owned by ITV plc ? | What is the UHF of the Blaenplwyf transmitting station service by frequency that is owned by Viacom ? | The Blaenplwyf transmitting station service by frequency established under a Royal Charter uses which system ? | What is the system for the Blaenplwyf transmitting station service by frequency that is the fifth national terrestrial analogue channel ?

Answers:
1 | 25+ | 56 | DVB-T | PAL System I