ultraviolet index in Batu Batu Bay (Tawitawi Island) (22 km) | ultraviolet index in Banaran Island (29 km) | ultraviolet index in Port Bongao (Tawitawi Island) (32 km) | ultraviolet index in Basbas Channel (Tawitawi Island) (32 km) | ultraviolet index in Gallo Malo Channel (s. Entr) (34 km) | ultraviolet index in Tandugan Channel (Tawitawi Island) (41 km) | ultraviolet index in Lahatlahat Island (58 km) | ultraviolet index in South Ubian Island (61 km) | ultraviolet index in Pearl Bank (71 km) | ultraviolet index in Tumindao Channel (79 km)