ADC/CDS Standard Document for Catalog:
/catalogs/8/8011/

1. Use the ADC Data Viewer Suite to visualize the data.
2. Get the data files via anonymous FTP. (See Note.)

VIII/11     Berkeley Low-Latitude H I Survey (Weaver, Williams 1973)
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The Berkeley Low-Latitude Survey of Neutral Hydrogen
    Weaver H., Williams D.R.W.
    <Astron. & Astrophys. Suppl., 8, 1 (1973)>
    =1973A&AS....8....1W
================================================================================
ADC_Keywords: Radio sources ; Surveys ; H I data 

Description:
   This survey consists of H I 21-cm spectra covering galactic latitudes
   from -10 degrees to +10 degrees and galactic longitudes from
   10 degrees to 250 degrees.  The observations were made with the Hat
   Creek 85-foot telescope between 1968 and 1970.  The individual spectra
   contain 238 points per profile and cover a velocity range of 250 km/s.
   The velocity resolution is 2 km/sec (half-power of each filter) and
   the half-power beamwidth is 35 arcmin.  The spacing between points
   observed on the sky are 0.25 degrees in galactic latitude and
   0.5 degrees in galactic longitude. Each spectrum or record consists of
   a header followed by 238 antenna temperatures. The header contains the
   galactic longitude, galactic latitude, and central velocity (lsr). The
   catalog contains a total of 38961 spectra.  

File Summary:
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 FileName       Lrecl  Records   Explanations
--------------------------------------------------------------------------------
ReadMe             80        .   This file
catalog.dat      1204    38961   Low latitude H I Survey Data
software.for       80      459   Two Fortran main codes and several subroutines
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Byte-by-byte Description of file: catalog.dat
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   Bytes    Format  Units     Label    Explanations
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   1-  4     I4     0.1deg    GLONm    Galactic Longitude
   5-  9     I5     0.01deg   GLATm    Galactic Latitude
  10- 14     I5     0.1km/s   CenVel   Central Velocity (Local Standard of Rest)
  15-1204 238I5     0.1K      AntTemp  Antenna temperature
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Remarks1:
  In each record, the corresponding VLSRs for the measured antenna temperatures
  can be obtained by the following statements.
  cvel = CenVel * 0.1       in units of km/s
  Do i = 1, 238
     VLSR(i)= cvel + (i-122.)* 1.0553
  enddo

Brief description of software:
  The included software contains FORTRAN code for use in extracting spectra 
  from the H I surveys of Heiles and Habing, Parkes, Argentina, Bell Labs, and
  Weaver and Williams.

Remarks2:
  There was no previous ADC documentation for this catalog. The data format
  described in the "software" was used to create Byte-by-byte Description
  of this ReadMe file.
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(End)                        C.-H. Joseph Lyu [Hughes STX/NASA]  12-Dec-1995