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1 Quality values

QUALITY is stored in an 8-bit unsigned byte, where each bit gives a separate description of the quality of the associated data value. The meaning of each bit in ASTERIX is as follows:

     Bit  Meaning
      0    bad           -  unspecific bad quality
      1    missing       -  no data value at this point
      2    arith         -  arithmetic fault, eg. / by zero
      3       *** not currently used ***
      4       *** not currently used ***
      5       *** not currently used ***
      6    patched       -  indicates data patched/interpolated
      7    ignore        -  used to temporarily exclude points

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