Serial Data from Arduino to MAX

I see. I tried previously with sel 10 13 for less sensors and at times, I had to change the values that's why I assumed I had to change it again. Attaching my arduino code below.

I have been honestly watching videos, reading forums and taking stuff from wherever I see.

What can I add additionally?

//16 channels analog multiplexer
//Pinout

// S0 -> Arduino Digital 8
// S1 -> Arduino Digital 9
// S2 -> Arduino Digital 10
// S3 -> Arduino Digital 11
// E -> GND
// Z -> Arduino Analog A0
// VEE/ GND -> Arduino GND
// VCC -> Arduino + 5V
// Y0 to Y15 -> Analog Extended Pins - Y0-Y11

const byte sensePin = A0; //Analog Pin connected to Arduino


void setup()
{
  DDRB = 255;
  Serial.begin(9600);
}

void loop()
{
  int valY [12];

  for (byte i = 0; i < 12; i++) {
    PORTB = i;
    (void)analogRead(sensePin); // discard the first reading
    valY [i] = analogRead(sensePin);
  }

  for (byte i = 0; i < 12; i++) {
    Serial.print(valY [i]);
    Serial.print(" "); //to seperate each value
  } 
  Serial.println(); // Send ASCII CR & LF (13 & 10) to mark end of message
 
  delay(800); //delay to see values better, snaller for last version
}