Revision History for DS 703

Tyler B. Coplen, Jurate M. Landwehr, Haiping Qi, and Jennifer M. Lorenz

The d2H and d18O of Tap Water from 349 Sites in the United States and Selected Territories

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Posted online September 12, 2013

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Revised and reposted November 8, 2013

The name of the laser-based instrumentation in the Methods section has been clarified.
The text has been amended to clarify that the d18O uncertainty of the Los Gatos Research Liquid
Water Isotope Analyzer (model number 908-0008) instrument--not the laser-absorption method--is 
about a factor of ten higher than that of the dual-inlet isotope-ratio mass spectrometer.

Report Page	Correction
1		In the Abstract, clarified that d18O uncertainty applies to the Los Gatos Research Liquid 
 		Water Isotope Analyzer (model number 908-0008) instrument and not to the laser-based method.

2		In the Methods section, corrected the name of the instrument to Los Gatos Research (LGR) 
		Liquid Water Isotope Analyzer.

5		In the Summary, clarified that d18O uncertainty applies to the Los Gatos Research Liquid 
 		Water Isotope Analyzer (model number 908-0008) instrument and not to the laser-based method.