Table 1. The diameters of the purplish red halos under different concentrations of H₂O₂.

H2O2 concentration (µM)	log[H2O2]	Diameter (cm)
5	0.70	1.07±0.03
10	1.00	1.20±0.02
20	1.30	1.32±0.02
40	1.60	1.49±0.03
60	1.78	1.59±0.03
80	1.90	1.65±0.01
120	2.08	1.72±0.03
160	2.20	1.79±0.01
200	2.30	1.79±0.01
250	2.40	1.79±0.01