Ozone sounding data from INM - Spain Ozonesonde flights have occurred from two locations, both within the vicinity of Madrid, Spain. The WOUDC platform ID of STN308 has been used for both locations, thus the dual name Madrid/Barajas. Sonde flights from 1992-January 1997 were launched from Madrid and from February 1997- present, from Barajas. The coordinates of Madrid are the same as the ground-based total ozone monitoring site where a Brewer instrument is in operation. Madrid: 40.45 N, 3.72 W and 680m. Barajas is located near the airport at: 40.47 N, 3.58 W and 631m. J-L Camacho, INM February 2006