#define pot 35
int ADC_out;
const int windowSize = 10; // Has to be constant
int readings[windowSize]; // The size need to be constant
int readIndex = 0;
int total = 0;
int average = 0;

void setup()
{
  Serial.begin(9600);
  delay(100);
  // reseting the values to zero
  for(int i = 0; i < windowSize; i++)
  {
    readings[i] = 0;
  }
}
void loop()
{
  // removing the last reading from the total
  total = total - readings[readIndex];

  // read the ADC
  readings[readIndex] = analogRead(pot);

  // adding the reading to the total
  total += readings[readIndex];

  // Calculate the average
  average = total/windowSize;

  // Printing the result
  Serial.print(readings[readIndex]);// This is the green line
  Serial.print(",");
  Serial.println(average);          // This is the orange line

  // updating the readIndex
  readIndex = (readIndex + 1) % windowSize;
}