Box Plot from Scientific Research

Impedance (kOhm) against frequency graph of fully transparent ECOG device after implantation, after 14 days and 20 days for 10 channels picked at random. The boxes in c) and d) represent the upper and lower quartiles, the whiskers represent the upper and lower extremes, and the line in the box in d) represents the median for measurements fromn= 10 electrodes.

DOI