A method for evaluating data representing a plurality of excitations of a plurality of sensors; the method comprising: (a) storing the data as a plurality of entries in an information store; each respective sensor-excitation pair being a respective entry; (b) exercising a fit relationship employing at least one first sine value to determine a fit value substantially simultaneously for at least a portion of the plurality of entries; (c) ascertaining a measure of fit error between the data and the fit value for the portion of entries; (d) employing the measure of fit error to estimate at least one next sine value; (e) employing the at least one next sine value to perform a fit optimization operation with the data substantially simultaneously for the portion of entries; and (f) repeating steps (c) through (e) until a desired number of the sine values has been exercised.