SuessR                  Calculate Suess and Laws corrections for stable
                        carbon isotope data from a built-in region
SuessR.custom           Calculate Suess and Laws corrections for stable
                        carbon isotope data from a custom region
SuessR.reference.data   Reference dataset for the SuessR Package
reg.uptake              Calculate a regional carbon dioxide uptake
                        constant from empirical DIC data
