Version 2, 2009-06-15; Start location: Lincoln, IL; Distance from radiation site: 82 km; If launch time is exactly 00Z or 12Z, the actual launch time is likely unknown
At Neumayer station the transition of sonde type from Vaisala RS92-SGP to RS41-SGP is controlled by tandem soundings starting in July 2018. Each file in this dataset was acquired together with the cor