ultraviolet index in Pei-hai (北海) - 北海 (52 km) | ultraviolet index in Pei-hai (北海) - 北海（北部湾） (52 km) | ultraviolet index in Long Moun (长山) - 长山（北部湾） (100 km) | ultraviolet index in Lochuc San (122 km) | ultraviolet index in Cape Kami (上岬) - 上岬(海南街) (123 km) | ultraviolet index in Móng Cái (Mong Cai) - Móng Cái (128 km) | ultraviolet index in Port Beaumont (博蒙特港) - 博蒙特港 (陈江) (139 km) | ultraviolet index in Co To (140 km) | ultraviolet index in Cái Chiên (Cai Chien) - Cái Chiên (142 km) | ultraviolet index in Pai-ma-ching (白马精) - 白马精 (143 km)