Kinetic data on the cyclopropanation of styrene with dirhodium tetracarboxylate catalysts recorded by Wei et al. was reanalysed to obtain orders consistent with the reported values, although with a catalyst order of 1.12 rather than 1.0 which is consistent with catalyst inhibition (Fig. and Table , Entry 8). The same excess run was included in the calculation to further improve reaction order accuracy, illustrating the power of varying more than one initial concentration per run. Auto-VTNA was also applied to the analogous kinetic dataset recorded by Wei et al. in dimethylcarbonate (Table , Entry 9) which was found to be less consistent. We hypothesised that by including all experiments indiscriminately, the noise caused by poorly controlled factors such as water concentration would cancel out to reveal the true orders. While the calculated order in diazo compound matched the reported value of 1, the order in Figure . VTNA overlay plots illustrating the degree of concentration profile overlay achieved by total VTNA using: (a) the reported order values; (b) and those calculated using Auto-VTNA. Every colour refers to a different experiment.