code: def clean(inst):
      
  
      inst.data.replace(-999., np.nan, inplace=True) # Te
      inst.data.replace(-9.9999998e+30, np.nan, inplace=True) #Ni
  
      return None
docs: Routine to return FPMU data cleaned to the specified level
  
      Parameters
      -----------
      inst : (pysat.Instrument)
          Instrument class object, whose attribute clean_level is used to return
          the desired level of data selectivity.
  
      Returns
      --------
      Void : (NoneType)
          data in inst is modified in-place.
  
      Notes
      --------
      No cleaning currently available for FPMU