f_con_high - function definition as needed by fmincon
f_lsq_high - function definition as needed by lsqnonlin
optim_output - function to generate various output from the optimization algorithm including final function and parameters values and convergence behavior
prob_wells_fmincon_with_comments - generates the pentagon plots for the fmincon algorithms
prob_wells_lsq_with_comments - generates the pentagon plots for the lsqnonlin algorithms
high_freq_data - contains variable values for the function definition including measured surface impedance Zs and measured values of x1 and x2 (sigma and phi) for comparison to optimization results