The fit includes ${{\mathit D}^{\pm}}$, ${{\mathit D}^{0}}$, ${{\mathit D}_{{{s}}}^{\pm}}$, ${{\mathit D}^{*\pm}}$, ${{\mathit D}^{*0}}$, ${{\mathit D}_{{{s}}}^{*\pm}}$, ${{\mathit D}_{{{1}}}{(2420)}^{0}}$, ${{\mathit D}_{{{2}}}^{*}{(2460)}^{0}}$, and ${{\mathit D}_{{{s1}}}{(2536)}^{\pm}}$ mass and mass difference measurements.
Given the recent addition of much more precise measurements, we have omitted all those masses published up through 1990. See any Review before 2015 for those earlier results.