When the values were absent, but a figure of P(E) was given, we determined the <E> of the center of the distribution from the Figure . However, the values of <E> cannot be compared directly between articles because different levels of theory were used to obtain the E0 values, and most studies did not take the kinetic shift into account. To compare <E> values from articles using different thermometer ion series, we recalculated the <E> by taking the kinetic shift into account.