[FFmpeg-user] Numerical histogram output for checking typical broadcast ranges (16-235)

Hello, I am very new in using the histogram filter. (http://ffmpeg.org/ffmpeg-filters.html#histogram) Is it possible to dump the video level values from which the histogram graph is drawn into numeric values (textfile dump) to check if a video has levels inside the broadcast ranges (16-235/94-940)? bg Christoph