Fig. 3. Enthalpy, ΔH^SL_0i, of Gly–Gly, Gly–Ala, Ala–Gly, Ala–Ala and cyclo(Ala–Gly) in respect to initial sample mass, m₀, regardless of the scanning rates. The symbols used were as described in Fig. 2. The dashed line was linear fit through zero origin, where the slope denoted as Δh^SL_0i. The scanning rates used were 2000 K s⁻¹ (circles), 4000 K s⁻¹ (up-triangles), 5000 K s⁻¹ (hexagonals), 6000 K s⁻¹ (down-triangles), 8000 K s⁻¹ (diamonds), 10 000 K s⁻¹ (stars). The melting enthalpy for Gly–Gly, Gly–Ala, Ala–Gly, Ala–Ala and cyclo(Ala–Gly) is Δh^SL_0Gly–Gly = (40 ± 6) kJ mol⁻¹, Δh^SL_0Gly–Ala = (41 ± 5) kJ mol⁻¹, Δh^SL_0Ala–Gly = (52 ± 7) kJ mol⁻¹, Δh^SL_0Ala–Ala = (45 ± 7) kJ mol⁻¹ and Δh^SL_{0cyclo(Ala–Gly)} = (24 ± 4) kJ mol⁻¹, respectively. The values are already given in the figures, same for Fig. 2.