O I
   
   wave      loggf  source Chi_low    log(N_OI/Ntot)

   4368.193  -2.665 NIST5  76794.978   -3.35 
   4368.242  -1.964 NIST5  76794.978     ''      
   4368.258  -2.186 NIST5  76794.978     ''      
   6155.961  -1.363 NIST5  86625.757   -3.35 
   6155.971  -1.011 NIST5  86625.757     ''   
   6155.989  -1.120 NIST5  86625.757     ''
   6156.737  -1.487 NIST5  86627.778   -3.35 
   6156.755  -0.898 NIST5  86627.778     ''    
   6156.778  -0.694 NIST5  86627.778     ''      
   6158.149  -1.841 NIST5  86631.454   -3.35  
   6158.172  -0.996 NIST5  86631.454     ''
   6158.187  -0.409 NIST5  86631.454     ''
   7156.701  +0.288 NIST5 102662.029   -3.35