   digitalWrite(ActivityLED, HIGH);  // Turn the LED on during setup()
   Serial.begin(9600);               // Initialise serialport
   Serial.print("... ");
-  Serial.print(T0);
   tmp36.begin();                    // Initialise TMP36 sensor
   vbat.begin();                     // Initialise VBAT sensor
   dht.begin();                      // Initialise DHT22 sensor

OneWire ds1w(DS18Pin);

ChipTemp chipTemp(ATSamples);
ChipTemp T0(1000);

const float T0 = T0.readTemperature(); // Before anything else determine the chip temperature while it's still close to ambient. Kind of...

float h;  // used for calculating dewpoint
float t;  // used for calculating dewpoint

        Serial.println("V | v : VBAT voltage");
        Serial.println("W | w : DS18B20 (1-wire) temperature");
        break;
      case 'C':
      case 'c':
        // ATMEGA temperature
