def identify_initial_engine_temperature(engine_coolant_temperatures):
    """
    Identifies initial engine temperature [°C].

    :param engine_coolant_temperatures:
        Engine coolant temperature vector [°C].
    :type engine_coolant_temperatures: numpy.array

    :return:
        Initial engine temperature [°C].
    :rtype: float
    """
    return float(engine_coolant_temperatures[0])
