fractional deviations of Chebyshev coefficients \(c_i\left(B\right)\) from zero field values \(c_i\left(0\right)\) for a Cernox® CX1010 resistive thermometer. This sensor  has a large magnetoresistance at low temperature but the magnetic field dependence of the Chebyshev fit coefficients has approximately the same functional form for each coefficient.