MinMaxTest

  int potPin = 0;
  int potMax = 0;
  int potMin = 1023;
  int potRead;

void setup() {
  Serial.begin(19200);
}

void loop() {
pot();

}

void pot() {
  potRead = analogRead(potPin);
//  if ( potRead < potMin) potMin = potRead;
//  if ( potRead > potMax) potMax = potRead;
  potMin = min(potMin,potRead);
  potMax = max(potMax,potRead);
  //hours = map(potRead,potMin,potMax,1,12);
  Serial.print(potRead);
  Serial.print("   ");
  Serial.print(potMin);
  Serial.print("   ");
  Serial.println(potMax);

}