radar
: Radar identifier.
datetime
: POSIXct date of each profile in UTC.
vid
: Vertically Integrated Density in individuals/km^2. vid
is a
surface density, whereas dens
in vp
objects is a volume density.
vir
: Vertically Integrated Reflectivity in cm^2/km^2.
mtr
: Migration Traffic Rate in individuals/km/h.
rtr
: Reflectivity Traffic Rate in cm^2/km/h.
mt
: Migration Traffic in individuals/km, cumulated from the start of the
time series up to datetime
.
rt
: Reflectivity Traffic in cm^2/km, cumulated from the start of the
time series up to datetime
.
ff
: Horizontal ground speed in m/s.
dd
: Horizontal ground speed direction in degrees.
u
: Ground speed component west to east in m/s.
v
: Ground speed component south to north in m/s.
height
: Mean flight height (height weighted by eta) in m above sea level.