SAC HEADER

NPTS = number of data points

B = begin time
E = end time

IFTYPE = file type
LEVEN = evenly sampled time series
DELTA = spacing in time of data points
IDEP = physical unit of the data

 

DEPMIN = minimum amplitude
DEPMAX = maximum amplitude
DEPMEN = mean amplitude

OMARKER = event origin marker
AMARKER = first arrival (P) marker
T0MARKER = t0 (S) marker

KZDATE = reference date
KZTIME = reference time
IZTYPE = type of reference time

KSTNM = station name
CMPAZ = component azimuth relative to north
CMPINC = component "incidence angle" reletive to the vertical
STLA = station latitude
STLO = station longitude
STEL = station elevation
STDP = station depth below surface (meters)

EVLA = event latitude
EVLO = event longitude
EVDP = event depth

DIST = source receiver distance in km
AZ = azimuth
BAZ = back azimuth
GCARC = great circle distance

LOVROK = TRUE if it is okay to overwrite this file on disk
NVHDR = Header version number. Current value is the integer 6.
SCALE = Multiplying scale factor for dependent variable
NORID = Origin ID (CSS 3.0)
NEVID = Event ID (CSS 3.0)
NWFID = Waveform ID (CSS 3.0)
LPSPOL = TRUE if station components have a positive polarity (left-hand rule)
LCALDA = TRUE if DIST, AZ, BAZ, and GCARC are to be calculated from station and event coordinates
KCMPNM = Component name
KNETWK = Network name
MAG = Event magnitude