"individual.id" - individual identifier for the bat. Typically a radio tag frequency
"radio.frequency" - the frequency of the radio transmitter
"pit.tag" - PIT tag identification number
"sex" - Sex of the animala (f = female,  m = male)
"mass" - mass of the animal in grams
"forearm.length" - length of the forearm
"timestamp" - local timestamp (YYYY-MM-DD HH:MM:SS)
"height.asl" - height in meters above sea level
"height" - height in meters above lake level
"wingbeat.per.sec" - wingbeat frequency in beats per second (Hz)
"flap.glide" - whether the bat was beating its wings (flap) or gliding (glide). NA indicates no observation
"rate" - the rate of height change from the point preceding. Negative values indicate descent, positive values ascent.
"kn.air.temp" - local air temperature
"kn.air.pressure" - local air pressure
"winddirection" - local meteorological wind direction
"windspeed" - local wind speed
"wind.U" - zonal wind velocity (horizontal wind toward East)
"wind.V" - meridional wind velocity (vertical wind toward North)

The variables kn.air.temp, kn.air.pressure, winddirection, and windspeed, were obtained from Deutscher Wetterdienst (DWD) at https://cdc.dwd.de/portal/201810240858/index.html on 2018-02-04. Permission was obtained from DWD by Axel Kuschnerow to release this subset of data in Dryad. Please acknowledge the original data source in any subsequent reuse of these data.