These are the contents of the sac file
SAC_PZs_NM_SLM_LHZ__1999.160.20.40.00.0000_99999.9999.24.60.60.99999
* **** * NETWORK (KNETWK): NM * STATION (KSTNM ): SLM * COMPONENT (KCMPNM): LHZ * LOCATION (KHOLE ): * START : 1999,160,20:40:00.0000 * END : No Ending Time * INPUT UNIT : METER * OUTPUT UNIT : COUNT * SITE NAME : St. Louis, MO * RATE (HZ) : 1.000000 * OWNER : Cooperative New Madrid Seismic Network * LATITUDE (DEG) : 38.63610 * LONGITUDE (DEG) : -90.23640 * ELEVATION (M) : 186.00000 * DEPTH (M) : 0.00000 * DIP (DEG) : -90.00000 * AZIMUTH (DEG) : 0.00000 * INSTRUMENT : Q380-STS2-0010 * INSTRUMENT COMMENT: * CHANNEL_FLAG : * **** ZEROS 3 POLES 5 -0.0356 -0.0369 -0.0356 0.0369 -251.3300 0.0000 -131.0400 -467.2900 -131.0400 467.2900 CONSTANT 3.690601e+16