user: Question: What's the broadcasting hours of NBT?
Columns: ['Name', 'Network', 'Owner', 'Launch date', 'Channel ( BKK )', 'Broadcasting area', 'Transmitted area', 'Broadcasting hours']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Channel 3', 'MCOT and Bangkok Entertainment Co., Ltd.', 'BEC-TERO', '26 March 1970', '3/32 (VHF/UHF)', 'Rama IV Road', 'Bangkok', '24-hours']
SQL:

assistant: SELECT "Broadcasting hours" FROM "Table" WHERE "Network" = 'NBT';