     lcd.print(H, 1);   
   }
 
-  lcd.print("%");
-}
+}
+
 
 void displaydustDensity()
 {

  lcd.setCursor(0, 2);
  lcd.write(2);

  lcd.setCursor(0, 3);
  lcd.write(3);

  lcd.setCursor(8, 2);
  lcd.write(6);


  H  = -1000 ;
  T1 = -1000 ;

       lcd.write(5);      
    }
  } else {
    for ( int l = 0 ; l <= 3 ; l ++ ) {
       lcd.setCursor(19, l);
       lcd.write(" ");     
    } 
