Na I

  wave       loggf  source  Chi_low    log(N_NaI/Ntot)

  5682.633   -0.706 NIST5   16956.172  -5.86 
  5688.193   -1.406 NIST5   16973.368  -5.81 
  5688.205   -0.452 NIST5   16973.368   ''   
  6154.226   -1.547 NIST5   16956.172  -5.81