ultraviolet index in Basbas Channel (Tawitawi Island) (34 km) | ultraviolet index in Tandugan Channel (Tawitawi Island) (48 km) | ultraviolet index in South Ubian Island (55 km) | ultraviolet index in Gallo Malo Channel (s. Entr) (58 km) | ultraviolet index in Tataan Pass (Tawitawi Island) (58 km) | ultraviolet index in Port Siasi (Siasi Island) (60 km) | ultraviolet index in Pearl Bank (65 km) | ultraviolet index in Banting (Tapul Island) (67 km) | ultraviolet index in Pangutaran Island (71 km) | ultraviolet index in Banaran Island (72 km)