########### List of extension tabel of the experiment ER012A #############
AN1 = AN table applied coordinate correction.
CL1 = CL table created when loading data (CL int =2 secs)
SN1 = Output of running ANCAL on TY and GC tables
CL2 = The apriori amplitdue calibration (CL1 * SN1)
FG1 = Flagging band edges
SN2 = The phase, delay and phase rate solutions derived from sources
        identified as calibrators via FRING
      Calibrators: J0823+2938, DA193, 1613+341, 3C286
      Flags in FG1
      SOLINT= 2 min
CL3 = CL2 * SN2 (the application of SN2 to CL2)
BP1 = Bandpass amplitude and phase (the application of CL2 and FG1)
SN3-6 = Amplitude and phase gain corrections derived from crude maps of 
        the 4 calibrators
CL4 = CL3 * SN3 (the application of SN3-6 to CL3)