2.2.2 spase://SMWG/Observatory/Ground/Podkamennaya.Tunguska Podkamennaya Tunguska Observatory Station Code: POD 2018-09-06T12:34:56.789 The Podkamennaya Tunguska geophysical observatory. Please acknowledge: Arti Geophysical Observatory, Institute of Geophysics, Urals Branch of Russian Academy of Sciences spase://SMWG/Person/Tatiana.Bondar GeneralContact DataProducer spase://SMWG/Person/Galina.Semenova GeneralContact DataProducer spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact spase://SMWG/Observatory/WDC/Podkamennaya spase://SMWG/Observatory/Ground/WDC Earth.Surface GEO 61.6 90 1969-01-01T00:00:00.000 1991-12-31T23:59:59 Exact stop date is unclear.