   starttime = millis();
 
   Serial.println("Air Quality Gizmo by LMO");
-  Serial.println("Humidity %, Temperature C, PM ug/m^3, VOC mg/L, Hydrocarbs mg/m^3.");
+  Serial.println("Time s, Humidity %, Temperature C, PM ug/m^3, VOC mg/L, Hydrocarbs mg/m^3");
 
   dht.begin();
 

  DDRB |= 0x21;
  PORTB |= 0x21;


  SeeedOled.setNormalDisplay();          // Set normal display
  SeeedOled.clearDisplay();               // clear the screen and set start position to top left corner
  SeeedOled.drawBitmap(LCAlogo, 1024);  // 1024 = 128 Pixels * 64 Pixels / 8

int pin = 8;
unsigned long duration;
unsigned long starttime;
unsigned long sampletime_ms = 5000;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
