(sqrt(mic1_real^2+mic1_imag^2)-withsol('sol1',sqrt(mic1_real^2+mic1_imag^2),setval(freq,freq)))/sqrt(mic1_real^2+mic1_imag^2) 1 "Sensor 1, magnitude" (sqrt(mic2_real^2+mic2_imag^2)-withsol('sol1',sqrt(mic2_real^2+mic2_imag^2),setval(freq,freq)))/sqrt(mic2_real^2+mic2_imag^2) 1 "Sensor 2, magnitude"