Optical theodolite 1 002003 Sodar 9 002003 Satellite navigation 7 002003 Type of measuring equipment used Radio theodolite 2 002003 Missing value 15 002003 VLF-Omega 4 002003 2014-09-03T09:53:34.768Z Radar 3 002003 1 Loran C 5 002003 Pressure instrument associated with wind measuring equipment 0 002003 Radio-acoustic Sounding System (RASS) 8 002003 Wind profiler 6 002003 Pressure instrument associated with wind measuring equipment but pressure element failed during ascent 14 002003