Water-column Total Thorium-234; Buesseler, Charette, & Moore 
  Version History:  
   11 June 2020 (current) - replaced with GEOTRACES DOoR/IDP formatted file. 
   08 May  2020 - corrected date and time of event 4076. 
   18 July 2017 - changed parameter names containing "TD" to "T" to indicate "total", in accordance with GEOTRACES IDP naming conventions. 
   27 Jan  2017 -  moved values for sample 9547 from _FISH_ to _UWAY_ columns. 
   10 Nov  2016 - corrected incorrect event number at station 17: "4127" changed to "4217"; also corrected an incorrect sample number at event 4358: "9546" changed to "9547". 
   11 July 2016 - created separate columns by instrument type, in accordance with the GEOTRACES IDP naming nonventions. 
   03 June 2016 - original version.