At frequency 1k:
vmin                =  1.592261e-03 at=  1.000000e-02
vmax                =  1.444899e+00 at=  9.267272e-03

At frequency 10k:
vmin                =  8.255431e-01 at=  9.117532e-04
vmax                =  1.713420e+00 at=  9.317532e-04
At frequency 100k:
vmin                =  1.292463e+00 at=  9.139306e-05
vmax                =  1.399976e+00 at=  9.339306e-05