by now, we should have the ability to deal with multiple sources of constants and select which standard to use (CODATA 2010/2014/2018, IAU 2009/2012, etc). It could be useful to have a tool to go through all available values of a constant and present the values against the standards which they match. For instance, the value for G in IAU 2009 is the same as CODATA 2006, which has been updated in CODATA 2014. Listing out the precision is also valuable.
by now, we should have the ability to deal with multiple sources of constants and select which standard to use (CODATA 2010/2014/2018, IAU 2009/2012, etc). It could be useful to have a tool to go through all available values of a constant and present the values against the standards which they match. For instance, the value for G in IAU 2009 is the same as CODATA 2006, which has been updated in CODATA 2014. Listing out the precision is also valuable.