Figure 3
From: Effect of heat treatments on superconducting properties and connectivity in K-doped BaFe2As2

Tc-distribution properties of the K-Ba122 samples as a function of the 1st HT temperature. (a) position and width of the main peaks in the Tc-distributions at 0 T obtained in Fig. 2. (b) area of the 0 T Tc-distribution above 30 K. (c,d) similar data for the 16 T results.