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://SMWG/NumericalData/ICON/FUV/L3/Column-ON2/PT10D NASA NumericalData The ICON Far Ultra Violet Daytime Column O/N2 2026-06-09T00:00:00Z 2026-06-10T00:00:00Z First release ICON FUV Daytime observations. 48-day windows of data from the L2.4 v07 product are collected into longitude, latitude, and local time bins. Mean and standard deviations of each parameter are reported in this file. The FUV instrument takes 2D images of the Earth’s horizon in the Far ultraviolet. The imager is pointing approximately 90 degrees to the spacecraft motion, similar to looking out of the side window of a car as it drives down the road. Onboard electronics read the image 8 times per second and perform Time Delay Integration (TDI) to remove the motion-blur from the images. A turret is used to steer the field of view of the instrument left to right to ensure it always looks along the magnetic meridian (towards the magnetic pole). National Aeronautics and Space Administration; Dr. Thomas Immel; Dr. Andrew W. Stephan; National Aeronautics and Space Administration Explorers Program contracts NNG12FA45C National Aeronautics and Space Administration Explorers Program contracts NNG12FA42I spase://SMWG/Person/Andrew.W.Stephan PrincipalInvestigator Additional information on ICON https://icon.ssl.berkeley.edu/ ICON spacecraft Homepage. The far ultra-violet Imager on the ICON mission https://doi.org/10.1007/s11214-017-0386-0 Space Science Reviews, 212(1-2), pp.655-696. DOI: 10.1007/s11214-017-0386-0 spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open 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 NASA Heliophysics data products CDAWeb HAPI Server https://cdaweb.gsfc.nasa.gov/hapi ICON_L3-3_Column-ON2 Web Service to this product using the HAPI interface. NetCDF Please acknowledge Dr. Thomas Immel. Please acknowledge the Data Providers and CDAWeb when using these Data. spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open 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 NASA Heliophysics data products HTTPS from SPDF https://spdf.gsfc.nasa.gov/pub/data/icon/l3/climatology/ ICON_L3-3_Column-ON2 Access to Data in NetCDF Format via https from SPDF CDAWeb https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=ICON_L3-3_Column-ON2&index=sp_phys ICON_L3-3_Column-ON2 Access to NetCDFs via NASA/GSFC CDAWeb NetCDF None Please acknowledge Dr. Thomas Immel. Please acknowledge the Data Providers and CDAWeb when using these Data. Calibrated ICON FUV team spase://SMWG/Instrument/ICON/FUV ImageIntensity 2019-12-09T10:13:00Z 2022-11-03T11:28:35 PT30S Earth.NearSurface.Atmosphere Earth.NearSurface.Ionosphere Epoch Time Epoch Milliseconds since 1970-01-01 00:00:00 UTC at middle of measurement integration. Time corresponding to the middle of each 48 day average, in milliseconds since Jan 1 1970. P10D ms 0 6000000000000 -999 Magnitude Temporal 48 day bins ICON_L33_Dates Dates used in each 48 day bin, in string format, in the format: YYYY-MM-DD. Year (YYYY), Month(MM), and Day (DD). P10D -999 Magnitude Temporal Mean Binned Disk ON2 Ratio ICON_L33_Disk_ON2 Mean value of Disk O/N2, taken over all good quality L2 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L24_Disk_ON2. P10D 0 1.000000020040877e+20 -999 Other Ratio Number of data points ICON_L33_DataPoints Number of data points in each 48 day average, as a function of longitude, latitude, time. P10D counts 0 1.000000020040877e+20 -999 Total Other Sigma Disk O/N2 ICON_L33_Sigma_Disk_ON2 One standard deviation of the good Disk O/N2 values used to compute the mean, as a function of longitude, latitude, time. P10D 0 1.000000020040877e+20 -999 Other Ratio Local Time Bin ICON_L33_LocalTime Local time binned in 0.5 hour intervals, local time +/- 0.25 hours. P10D hours 6.25 18.25 -999 Direction Positional Latitude Bin ICON_L33_Latitude Latitude of the O/N2 data, binned in 5 degree intervals, latitude +/- 2.5 degrees. Derived from ICON_L24_Disk_Latitude. P10D degrees -20 35 -999 Direction Positional Longitude Bin ICON_L33_Longitude Longitude of the O/N2 data, binned in 15 degree intervals, longitude +/- 7.5 degrees. Derived from ICON_L24_Disk_Longitude. P10D degrees 0 360 -999 Direction Positional