new("TDR", ...) and new("TDRspeed", ...). TDR objects contain concurrent time and depth readings, as well
as a string indicating the file the data originates from, and a number
indicating the sampling interval for these data. TDRspeed
extends TDR objects containing additional concurrent speed
readings.
readTDR to retrieve all the necessary information.
The methods listed above can thus be used to access all slots.readTDR, TDRcalibrate.