** Description of SEIS-BS_NS data ** 1st line: GPS data 2nd line: Seismic noise signal without calibration. The unit is count. The trillium calibration constant(C) is 750 V/(m/sec) Also, it has a pre-amp with the gain of 10 (Camp). Calibration Eq: (Disp) = (low data)*40/(2^16)/750/(2ƒÎf)/10. count->V C v->m Camp