humidity

    Args:
        msg (String): 28 bytes hexadecimal message string

    Returns:
        float: percentage of humidity, [0 - 100] %

def hum44(msg):
    """humidity

    Args:
        msg (String): 28 bytes hexadecimal message string

    Returns:
        float: percentage of humidity, [0 - 100] %
    """
    d = hex2bin(data(msg))

    if d[49] == '0':
        return None

    hm = bin2int(d[50:56]) * 100.0 / 64    # %

    return round(hm, 1)