Of course I have to consider the possibility that resistor give me some varations (5%) so I have some intervals
So, a 5% variation will occur on the values read from the analog pin, too.
446 + 5% = 446 + 22.3 = 468.3
475 - 5% = 475 - 23.7 = 451.3
So, what does a reading of 460 mean?