Simulated MTRasym, MTRdouble, MTRdouble,cpw, and AREXdouble,cpw at around 2 ppm vs. ksw. Simulations were performed with a 2-pool model (solute and water pool) and Bavg power = 1 μT. AREXdouble,cpw has different unit than the other metrics, and has been arbitrarily scaled in this figure to allow for easy comparison to MTRdouble,cpw.