def per_capita_TED(sum_12_mo):
    """Calculates final Peak Hour Excessive Delay number.
    Args: sum_12_mo, the integer sum of all TED values.
    Returns: A value for Peak Hour Excessive Delay per capita.
    """
    print(sum_12_mo)
    pop_PDX = 1577456
    return sum_12_mo / pop_PDX