code: def temp45(msg):
      
      d = hex2bin(data(msg))
  
      sign = int(d[16])
      value = bin2int(d[17:26])
  
      if sign:
          value = value - 512
  
      temp = value * 0.25   # celsius
      temp = round(temp, 1)
  
      return temp
docs: Static air temperature.
  
      Args:
          msg (String): 28 bytes hexadecimal message string
  
      Returns:
          float: tmeperature in Celsius degree