Dependencies of reaction constants on temperature. The logarithms and error estimates of kA (top), kB (middle), and keq = kB/kA (bottom) are plotted versus 1/T for residues of region one (heavy solid lines), region two (heavy dashed lines), and region three (solid thin lines). Regions include residues listed in Table 2. On the horizontal axis, temperatures in centigrade are given in parentheses.