XTENSION  'BINTABLE'          binary table extension
BITPIX       -64              double precision
NAXIS        2                2-dimensional binary table
NAXIS1      TBD               width of table in bytes
NAXIS2      TBD               number of rows in table
TFIELDS     TBD               number of fields in each row
EXTNAME   'SINGLE DISH'       name of this binary table extension
NMATRIX   1                   Number of DATA arrays
OBSERVER  'First Name Last Name' Observer name(s)
PROJID    'Based on real situation' Project name
TELESCOPE 'FAST'              Telescope name
**OBSGEO-LON 25.652939 [degree] Telescope longitude (of the spherical center of the reflector)
**OBSGEO-LAT 106.856594 [degree] Telescope latitude (of the spherical center of the reflector)
**OBSGEO-ALT 1138.72178     [m] Telescope altitude (of the spherical center of the reflector)
OBSGEO-X  -1668557.9202  [m] Antenna ITRF X-coordinate (spherical center)
OBSGEO-Y   5506865.9640  [m] Antenna ITRF Y-coordinate (spherical center)
OBSGEO-Z   2744946.0867  [m] Antenna ITRF Z-coordinate (spherical center)

TTYPE1    'NUMBER'           Observation number
TFORM1    '1I      '                Integer
TTYPE2     'SCAN    '            Scan number
TFORM2   '1I      '                Integer
TTYPE3    'DATATYPE'         The type of the data 1. line 2. continuum
TFORM3  '16A'                   16 characters
TTYPE4   ' QUALITY'          Quality of the data (unusable 0, Usable 1, ...)
TFORM4  '1I'                      Integer
TTYPE5   'UTOBS'             The observation time (UT) of each spectrum (seconds)
TFORM5  '1D'                    Double
TTYPE6   'LSTOBS'            The observation time (LST) of each spectrum (seconds)
TFORM6 '1D'                     Double
TTYPE7   'AZIMUTH'         Azimuth of observation(degree)
TFORM7  '1D'               Double
TTYPE8   'ELEVATION'         Elevationof observation(degree)
TFORM8  '1D'               Double
TTYPE9   'TSYS'         System temperature (K)
TFORM9  '1D'               Double
TTYPE10  'TIME'         Integration time(seconds)
TFORM10 '1D'               Double
TTYPE11   'SOURCE'         Source name
TFORM11 '16A'               16 characters
TTYPE12  'LAMBDA'         Longitudeof source(degree)
TFORM12 '1D'                  Double
TTYPE13  'ELEVATION'    Latitudeof source(degree)
TFORM13 '1D'                  Double
TTYPE14  'OFF_LAMBDA'     Offset in longitude(degree)
TFORM14 '1D'                  Double
TTYPE15   'OFF_ELEVATION'     Offset in latitude(degree)
TFORM15 '1D'                  Double
TTYPE16  'EPOCH'           Epoch of coordinates(Years)
TFORM16 '1D'                  Double
TTYPE17  'LINE'               Line name (transition name)
TFORM17 '16A'               16 characters
TTYPE18  'CHANNELS'         Number of channels
TFORM18 '1I'                  Integer
TTYPE19  'REFERENCE'         Reference channel
TFORM19 '1D'                 Double
TTYPE20  'FREQ_STEP'         Frequency step by channel (MHz)
TFORM20 '1D'                 Double
TTYPE21  'VELO_STEP'         Velocity step by channel (km/s)
TFORM21 '1D'               Double
TTYPE22  'VELOCITY'        Velocity of the reference channel
TFORM22 '1D'               Double
TTYPE23  'FREQUENCY'       Rest frequency at the reference channel
TFORM23 '1D'               Double
TTYPE24  'BEAM_EFF'       Telescope beam efficiency
TFORM24 '1D'               Double
TTYPE25  'PRESSURE'       External pressure (hPa)
TFORM25 '1D'               Double
TTYPE26  'AMBIENT_T'       External temperature (K)
TFORM26 '1D'               Double
TTYPE27  'DATA'               Brightness temperature (K)
TFORM27 '4096E'               4096 chennels
END