def METHOD_NAME():
    f = open("gold/bh05.csv")
    data = [line.strip().split(",") for line in f.readlines()[1:]]
    f.close()
    data = [list(map(float, line)) for line in data if len(line) > 5]
    pfe = [(data[i][4], data[i][1] / (data[i][0] - data[i - 1][0]), data[i][5]) for i in range(1, len(data))]
    return pfe