Label:Format::Units:Description.
~ (tilda) is a line-break marker in DESCRIPTION.
The colon is a field marker. Do not use a colon in Description (or any field...).

Event ID field.
Seq_Num:ASCII_Integer::none:A unique sequence number for the occultation. This sequence number is used in the timings file as well, to identify which occultation a given observation pertains to.

Date field.
Obs_Date:ASCII_Date_YMD::none:Date of observation.

Planet ID Fields.
Planet_Identifier:UTF8_String::none:Identifier of the planet or moon, in the format Pmm. P is a planet identifier for Mercury to Pluto (e, V, M, J, S, U, N, P). mm is the number of the moon about that planet. mm = '00' is for the planet itself.
Planet_Name:UTF8_String::none:Planet or moon's name, or other identification.
Planet_Dia_Nominal:UTF8_String::km:Mean diameter of the planet or moon, derived as a weighted mean of the diameters measured by the IRAS, Akari AcuA, and NEOWISE missions.

Planet Ellipse fit fields.
Major_Axis:ASCII_Real::km:Length of the major axis of the fitted ellipse.
Minor_Axis:ASCII_Real::km:Length of the minor axis of the fitted ellipse.
Major_Axis_PA:ASCII_Real::deg:Position angle of the major axis of the fitted ellipse.
Fit_Quality:ASCII_Integer::none:A code indicating the quality of the fit. Values are;~0 = 'No reliable position or size'~1 = 'Astrometry only. No reliable size' Observation can be used to report astrometry, but nothing meaningful about the asteroid's size.~2 = 'Limits on size, but no shape'. Poor coverage around the profile, but a diameter is determinable (often with a fit to a shape model)~3 = 'Reliable size. Can fit to shape models'. Good coverage around much of the profile enabling a reliable determination of the asteroid's size - even without a shape model~4 = 'Resolution better than shape models'. Profile of the asteroid well covered with highly consistent results.~5 = 'No astrometry AOTA2B = Possible'. For events where there is only one positive chord, and the duration of the potential occultation is one or two video frames or camera exposures. The AOTA2B test compares the light drop of a suspected event to other light drops in the light curve, and allocates a rating of Probable, Possible, or Unlikely, This setting is for when the Rating for such an event is 'Possible'. Such events are not used for any reporting process.~6 = 'Only one star of a double. No astrometry'. Used when the magnitude drop is much less than expected, and can only be explained by it being an occultation of one component of a double star. No astrometry is reported, as the location of the photocenter of the double star (which would equate to the Gaia star position) is unknown.
Used_Assumed_Diameter:ASCII_Integer::none:0 = false, 1 = true. Indicates the solution is based on a circle using Planet_Dia_Nominal.

Planet ellipse fit uncertainties.
Major_Axis_Uncert:ASCII_Real::km:Standard deviation of the solution for Major_Axis.
Minor_Axis_Uncert:ASCII_Real::km:Standard deviation of the solution for Minor_Axis.
Major_Axis_PA_Uncert:ASCII_Real:%8.1f:deg:Standard deviation of the solution for Major_Axis_PA.
