updated README.md

README.md

@@ -27,7 +27,7 @@ For citation purposes, please reference our arXiv paper (UPCOMING):
 
 # INCLUSION CRITERIA 
 - Clocks are included that are **portable**. This may be an obvious quality (for example the CSAC), or a quality that is stated as such in a publication or promotional (spec sheet, press release, etc) material. In a general terms it is a clock that can be moved and operated outside of the laboratory.
-- Has some performance measurements and available - publication, pre-publication, spec sheet etc
+- Has some performance measurements and available - publication, pre-publication, white paper, spec sheet etc.
 - At this point I have only included the most common current microwave atomic clocks. There are more, however the intention is to compare the new generation of portable optical atomic clocks to those clocks that currently represent the gold standard. 
 - The INCLUDE field in the SWAP_DATA.csv determines wether a clock will be in the plot. examples of why this might be set to 0:
     - There may be some clocks that have currently don't have enough data to be plotted.