def pretty_print_table(A, E):
    # Extracting the data
    pattern = r'Pop[A|E]([+-]?\d*\.\d+)/alpha([+-]?\d*\.\d+)'
    AKey = list(A.keys())[0]
    EKey = list(E.keys())[0]
    matchA = re.search(pattern, str(AKey))
    matchE = re.search(pattern, str(EKey))
    AY, EY = float(matchA.group(1)), float(matchE.group(1))
    Aalpha, Ealpha = float(matchA.group(2)), float(matchE.group(2))
    A = A[AKey]
    E = E[EKey]

    # Define column widths
    col_widths = [12, 8, 8, 8, 8, 8, 8]

    # Header of the table
    headers = ["Population", "Age", "mu", "Av", "chi2", "Y", "alphaML"]
    table = "|".join(h.ljust(col_widths[i]) for i, h in enumerate(headers)) + "\n"
    table += "-" * sum(col_widths) + (len(col_widths) - 1) * "-" + "\n"

    # Format and add rows for A and E
    for label, data in [("A", A), ("E", E)]:
        row = [label.ljust(col_widths[0])]
        row.extend("{:.3f}".format(data.x[i]).ljust(col_widths[j + 1]) for j, i in enumerate([2, 0, 1]))
        row.append("{:.3f}".format(data.fun).ljust(col_widths[4]))
        if label == "A":
            row.append("{:.3f}".format(AY).ljust(col_widths[5]))
            row.append("{:.3f}".format(Aalpha).ljust(col_widths[6]))
        if label == "E":
            row.append("{:.3f}".format(EY).ljust(col_widths[5]))
            row.append("{:.3f}".format(Ealpha).ljust(col_widths[6]))
        table += "|".join(row) + "\n"

    # Calculate and add percent difference row
    percent_diff_row = ["%".ljust(col_widths[0])]
    PCDiff = list()
    for i in [2, 0, 1]:
        percent_diff = (A.x[i] / E.x[i]) if E.x[i] != 0 else 0
        PCDiff.append(percent_diff)
        percent_diff_row.append("{:.3f}".format(percent_diff).ljust(col_widths[i + 1]))
    percent_diff_row.append(" ")  # Placeholder for chi2 in percent difference row
    table += "|".join(percent_diff_row) + "\n"
    
    
    table += f"Avg % diff: {abs(1-sum(PCDiff)/len(PCDiff)):0.4f}, Mean Chi2: {(A.fun + E.fun)/2:0.3f}" 

    return table