The data in this directory is split into three files:

centred.csv			The data corresponding to balanced coil driving for each spot position
offset-minus.csv		The data corresponding to coil driving with one coil offset by -0.1 V
offset-plus.csv			The data corresponding to coil driving with one coil offset by +0.1 V

Each file contains data with the following headers:

Position			The nominal centred spot position in metres (offset positions must be calibrated)
Error Signal Magnitude		The magnitude of the measured error signal in counts
Error Signal Phase		The phase of the measured error signal in degrees
Error Signal Noise Floor	The magnitude of the noise floor in counts

1 "count" corresponds approximately to 0.305 mV. This is measured with LIGO CDS hardware: https://dcc.ligo.org/T0900612/public/.