datetime
date-time timestamp of 5 minute interval maximum values

light
log lux value

twilight
3 possible values denoting each time interval as Not twilight, Dawn or Dusk

interp
Logical value if the twilight time was interpolated

excluded
Logical value if the twilight should be excluded from analysis



##Text taken directly from help file for FLightR function twGeos2TAGS

datetime date and time in ISO 8601 format e.g. 2013-06-16T00:00:11.000Z

light light value measured by tag

twilight assigned by the software numeric indication of whether the record belongs to sunrise (1), sunset (2) or none of those (0)

excluded indication of whether a twilight was excluded during manual inspection (logical, TRUE | FALSE)

interp indication of whether the light value at twilight was interpolated (logical, TRUE | FALSE)

The fields excluded and interp may have values of TRUE only for twilight > 0.