Arduino Due ADC References

Hi, I loaded the adc reference program, on arduino due, I have this result:
Please, I'm at the beginning of programming on arduino Due, and I'm interested in the various BIT configurations,
I enclose the launched program and the result on the Termite serial monitor, the arduino due serial monitor does not work, i.e. I cannot configure it. I also attach an image that returns the scan of the various configurations, I ask if you can help me understand the scan results. Each configuration has different numbers, I think they are bits ?, I see however that for each configuration they vary "they are not fixed", I would like to interpret them to understand if they can perhaps be used in an arduino MAP function to read the ADC values at various sensitivities .
Thank you
Jacob

Cattura

not sure what the prints are showing. please post the code