# Last edited on 2011-04-15 09:15:03 by stolfi

Comparing my Fukushima Daiichi numbers to Daniel's

  Someone called "Daniel" posted some plots of Fukushima Daiichi
  parameters, inclusing the raw data in spreadsheet format.
  
  In this directory I recast Daniel's spreadsheet into separate text files
  with a format sililar to my own, and wrote a gnuplot script to compare
  the two datasets.  
  
  Conclusions:
  
    * Daniel's data generally agrees with mine where they are
      present.  
      
    * Daniel has entered both Core Pressure and Water Level
      gauge readings, whereas I have chosen one of them.
      For pressure it seems I have chosen the most reliable
      one; for Water Level they seem roughly related by a 
      constant shift.
    
    * Apart for that, my data is more complete (covers 
      several periods where Daniel's don't).
    
    * There are a couple of down-spikes in Daniel's 
      Core Pressure data for Unit #1 which I do not have.
      They seem to be failure to correct gauge-to-abs
      pressures.
      
    * Daniel's core pressures of Unit #1 between mar/13 
      and apr/06 are systematically ~50 kPa above mine. 
      Who is right?
    
    * Daniel's core pressures of Unit #2 between mar/15 
      and mar/26 are consistenlty 100 kPa above mine. 
      Probably they were corrected twice for 
      atmospheric pressure.
    
    * Daniel's "NISAcorr" spreadsheet has a lot more
      data points than mine. Where did he got them?
      Do not seem interpolation, too irregular.