from typing import List


def make_low_rcp_list(predicted_temps_dict: dict) -> List[float]:
    """Return a list of RCP 2.6 temperature values
    """
    low_rcp_list = []

    for year in list(predicted_temps_dict.keys()):
        low_rcp_list.append(predicted_temps_dict[year]['RCP 2.6'])

    return low_rcp_list