Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Branding | Callsign | Ch. # | Power kW | Station Type | Location (Transmitter site) |
| --- | --- | --- | --- | --- | --- |
| PTV 4 Manila | DWGT-TV | TV-4 | 50 kW (500 kW ERP) | Originating | Metro Manila |
| PTV 8 Baguio | DWZM-TV | TV-8 | 5 kW | Originating | Baguio |
| PTV 4 Laoag | DWZV-TV | TV-4 | 1 kW | Relay | Laoag |
| PTV 4 Dagupan | DZDM-TV | TV-4 | 5 kW | Originating | Dagupan |
| PTV 13 Vigan | DZFB-TV | TV-13 | 1 kW | Relay | Vigan |
| PTV 4 Isabela | DZZA-TV | TV-4 | 1 kW | Relay | Ilagan, Isabela |
| PTV 42 Pampanga | DYGS-TV | TV-4 | 5 kW | Relay | San Fernando, Pampanga |
| PTV 13 Baler | DZVA-TV | TV-13 | 1 kW | Relay | Baler, Aurora |
| PTV 13 Romblon | DYML-TV | TV-13 | 1 kW | Affiliate | Romblon |
| PTV 4 Palawan | DYGS-TV | TV-4 | 5 kW | Originating | Puerto Princesa |
| PTV 8 Naga | DWMA-TV | TV-8 | 1 kW | Originating | Naga |
| PTV 4 Goa | DZGA-TV | TV-4 | 0.5 kW | Affiliate | Goa, Camarines Sur |
| PTV 8 Legazpi | DZPN-TV | TV-8 | 1 kW | Relay | Legazpi |
| PTV 7 Caramoran | D-7-ZV | TV-7 | 0.01 kW | Affiliate | Caramoran, Catanduanes |
| PTV 9 Panganiban | D-9-ZV | TV-9 | 0.01 kW | Affiliate | Panganiban, Catanduanes |
| PTV 2 San Miguel | D-2-ZV | TV-2 | 0.02 kW | Affiliate | San Miguel, Catanduanes |
| PTV 5 Sorsogon | DWSN-TV | TV-5 | 1 kW | Affiliate | Sorsogon |
| PTV 2 Guimaras | DYYB-TV | TV-2 | 5 kW | Relay | Jordan, Guimaras |
| PTV 2 Iloilo | DYDY-TV | TV-2 | 5 kW | Originating | Iloilo |
| PTV 25 Kalibo | DYSL-TV | TV-25 | 1 kW | Relay | Kalibo, Aklan |
| PTV 2 Bacolod | DYTL-TV | TV-2 | 5 kW | Originating | Bacolod |
| PTV 11 Cebu | DYPT-TV | TV-11 | 10 kW | Originating | Cebu |
| PTV 10 Dumaguete | DYMY-TV | TV-10 | 10 kW | Relay | Dumaguete |
| PTV 8 Tacloban | DYCO-TV | TV-8 | 5 kW | Originating | Tacloban |
| PTV 12 Calbayog | DYWP-TV | TV-12 | 1 kW | Relay | Calbayog |
| PTV 4 Borongan | DYES-TV | TV-4 | 5 kW | Relay | Borongan |
| PTV 7 Zamboanga | DXVC-TV | TV-7 | 5 kW | Originating | Zamboanga |
| PTV 7 Dapitan | D-7-XD | TV-7 | 0.5 kW | Translator | Dapitan |
| PTV 9 Sindangan | D-9-SD | TV-9 | 0.5 kW | Translator | Sindangan, Zamboanga del Norte |
| PTV 11 Sibugay | DXSI-TV | TV-11 | 1 kW | Relay | Ipil, Zamboanga Sibugay |
| PTV 27 Cagayan De Oro | DXNL-TV | TV-27 | 5 kW | Originating | Cagayan De Oro |
| PTV 11 Davao | DXNP-TV | TV-11 | 10 kW | Originating | Davao |
| PTV 5 General Santos | DXWP-TV | TV-5 | 1 kW | Originating | General Santos |
| PTV 9 Butuan | DXBN-TV | TV-9 | 5 kW | Originating | Butuan |
| PTV 10 Bislig | DXCL-TV | TV-3 | 10 kW | Relay | Bislig, Surigao Del Sur |
| PTV 32 Tandag | DXNT-TV | TV-32 | 1 kW | Relay | Tandag, Surigao Del Sur |
| PTV 8 Agusan | DXSK-TV | TV-8 | 1 kW | Originating | San Francisco, Agusan del Sur |
| PTV 4 Marawi | DXMI-TV | TV-4 | 5 kW | Relay | Marawi |
| PTV 8 Cotabato | DXAA-TV | TV-8 | 5 kW | Relay | Cotabato |
| PTV 8 Kidapawan | DXKN-TV | TV-8 | 5 kW | Relay | Kidapawan |
Question:
What is the channel number that has a branding of PTV 4 Laoag?
Answer:
TV-4