2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/TIMED/GUVI/L3_Thermospheric_O-N2 NASA NumericalData TIMED GUVI L3 Thermospheric O/N2 2025-12-04T13:32:04Z 2020-07-07T21:15:38Z Only known prior ReleaseDate of the metadata 2025-11-14T16:01:51Z Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-12-04T13:32:04Z Added MetadataRightsList. Updated to 2.7.1. ZCB Daily maps of the thermospheric column number density ratio of O and N2 referenced at N2 column number density level of 10e17 cm-2. NASA, Andrew B. Christensen Christensen, Andrew B. 2025-11-14T16:01:51Z Johns Hopkins University Applied Physics Laboratory spase://SMWG/Person/Andrew.B.Christensen PrincipalInvestigator O/N2 Data Information http://guvitimed.jhuapl.edu/data_on2_info spase://VITMO/NumericalData/TIMED/GUVI/L3_Thermospheric_O-N2 spase://VSPO/NumericalData/TIMED/GUVI/L3_Thermospheric_O-N2 spase://SMWG/Repository/TIMED/GUVI_POC Online Open GUVI POC L3 Thermospheric O/N2 (IDLsave) Data Request http://guvitimed.jhuapl.edu/data_fetch_l3_on2_idlsave This web page allows the request of data files for this product. To request data: select the year and day then press display. IDL None NASA, Andrew B. Christensen Calibrated GUVI L3 Thermospheric O/N2 Level 3 001 spase://SMWG/Instrument/TIMED/GUVI Profile 2002-01-07T00:00:00.000Z P14D Earth.NearSurface.Thermosphere TIMED GUVI lower thermosphere MLTI Thermospheric O/N2 Data O/N2 ratio The thermospheric column number density ratio of O and N2. unitless Molecule Ratio NumberDensity