Description of where what is within CPGB main directory (applies to
tar files as well).

yy:ddd.dasn.SSS.log = logfile from ref2segy for station SSS (DAS dasn) made on
                      Julian day ddd of year 19yy
yy:ddd.dasn.SSS.err = errfile corresponding to logfile
yy:ddd.dasn.SSS.pcf = PASSCAL clock file derived from .log file and used in
                      making CSS database .wfdisc files (with soh2db.full, in
                      scripts directory).  Mildly editted to avoid silly failures
yy:ddd.dasn.SSS.ccf = corrected PASSCAL clock file from rateclean run on .pcf.
                      Only used after about day tape 6.  Shouldn't have much,
                      if any, impact.

Data:
  Rddd.01/          = directory of segy format compressed data from ref2segy
                      files within these have been renamed 
                      yy.ddd.hh.mm.ss.SSS.C.Z, where the lowercase part is the
                      time at the beginning of the trace, SSS is the station
                      name, C is the presumed component (V,N,E usually from
                      channels 4,5,6), and .Z indicates it is compressed.
                      Directories consume about 80-120 Mb.

  Event_Gathers/    = directory containing CSS db files for event gathers
                      (described below) plus subdirectories oridxxxxx, where
                      xxxxx is the event id number for this experiment (in
                      the qed.current file also here).  Data within the
                      subdirectories are SAC format, named 
                      yyyydddhhmm.ss.SSS.CCC.Z, where the lower case is the
                      time of the start of the record (to integral seconds),
                      SSS is the station name, CCC is the component (e.g.,
                      BHZ = broadband high-gain vertical) and .Z indicates
                      (if present) that the file was compressed.
                      Note that all traces are here, both those with refrate
                      corrections and those without.  Examine the EventDB.wfdisc
                      and EventDB_NoTime.wfdisc (below) to determine if
                      a trace has correct timing.

  Calibrations/     = directory of calpulses manually extracted from the
                      continuous data; calpulses are saved by station in
                      subdirectories named equal to station names.  Files
                      within are SAC files named as in Event_Gathers.
                      CSS3.0 database files also present here.

  Events_by_date/   = (on CU system)-contains links by event origin time
                      to oridxxxx directories in Event_Gathers.  (On tar
                      tapes these are resolved to a duplicate directory of
                      gathers).

CSS/JSP database files

These are maintained for quicker, more reliable access to the data.
We are using the CSS3.0 schema as maintained by the JSP (Joint Seismic
Program) group at CU Boulder.

  css3.0               = file describing schema

  SSSdb                = db root file for station databases.Tables local to
                       SSSdb (where SSS is the station name) are just the
                       .wfdisc files, created by soh2db.full.  These files
                       include the time corrections from the .pcf files.
                       (these databases usually not saved on tar tapes)
                       Global tables common to these are those of the db
                       "current" (see below).
                       Only includes traces with refrate time correction.

  SSSdb_NoTime       = db root file for station seismograms lacking refrate
                       time corrections.  Otherwise same as SSSdb

  All_from_YYDDD_to_ZZEEE
                     = db root file for databases of all stations for the
                       times from midnight on 19YY, JD DDD to midnight
                       on JD EEE year 19ZZ (midnight at the start of the day).
                       Only local table is .wfdisc file (though we might
                       occasionally add a .arrival table flagging bad
                       glitches, etc.).  Uses global "current" tables.
                       Only includes traces with refrate time correction.

  All_from_YYDDD_to_ZZEEE_NoTime
                     = same as All_from_YYDDD_to_ZZEEE except these traces
                       lack refrate time corrections.  (Except for LMP in early
                       part of experiment, errors probably quite small).

  current.*          = db tables common to most (if not all) CSS databases
                       made in this experiment.  Includes .site, .sitechan,
                       .origin (which is updated periodically), .sensor
                       tables (more may be added).

  Event_Gathers/EventDB = db root file of database for the event gathers
                       in subdirectories oridxxxxx.  Gathers are from 200s
                       before P to origin time + distance (km) /2.2.  Only
                       local files are .wfdisc and maybe .arrivals (flagging
                       arrival qualities) and .assoc (relating arrivals and
                       current.origin).  Uses global files of current db.
                       Only includes traces with refrate time correction.

  Event_Gathers/EventDB_NoTime
                     = same as EventDB only it includes traces lacking a
                       refrate time correction.

  Calibrations/CalDB   = db root of database for calpulse gathers.Local file
                       only .wfdisc; global files in db current.  This db
                       has ALL traces, as timing info not critical here.

Scripts:
  Miscellaneous TCL, sh, and csh scripts used in processing (plus some small
fortran codes) are in the directory "scripts."

===========================
Special notes:

PHR and PH2 had channels 2 and 3 assigned to E and N, respectively.
This was not noticed until July '95 in processing; original day tapes prior
to that date have these channels MISIDENTIFIED (day tapes including data
prior to JD 95.106) when PHR had a CMG-4 (it was ok when a CMG-3 was there)
and the time for PH2.