matplotlib 6 fig plot

def plot_idx(df,image):
    # reset the default parameters
    plt.rcParams['font.size'] = 8.
    plt.rcParams['figure.figsize'] = (8.267, 11.692) #aA paper
    fig = plt.figure()
#plot all the 6 figures for 30/90/180...AllTime and save the image

    ax1 = fig.add_subplot(321) # first row first image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-1])
    ax1.plot(x, y,'r')
    ax1.plot(x_min,y_min,'o')
    ax1.plot(x_max,y_max,'o')
    ax1.set_xlabel('year')
    ax1.set_ylabel('Index Close')
    ax1.set_title(plot_title[-1])
    ax1.fill_between(x,y,facecolor='red')

    ax2 = fig.add_subplot(322) # first row second image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-2])
    ax2.plot(x, y,'r')
    ax2.plot(x_min,y_min,'o')
    ax2.plot(x_max,y_max,'o')
    ax2.set_xlabel('year')
    ax2.set_ylabel('Index Close')
    ax2.set_title(plot_title[-2])
    ax2.fill_between(x,y,facecolor='red')
#    ax2.axis([x[1], x[-1], 0.8 * y_min, 1.1 * y_max])

    ax3 = fig.add_subplot(323) # 2nd row first image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-3])
    ax3.plot(x, y,'r')
    ax3.plot(x_min,y_min,'o')
    ax3.plot(x_max,y_max,'o')
    ax3.set_xlabel('year')
    ax3.set_ylabel('Index Close')
    ax3.set_title(plot_title[-3])
    ax3.fill_between(x,y,facecolor='red')
    ax3.axis([x[1], x[-1], 0.8 * y_min, 1.1 * y_max])

    ax4 = fig.add_subplot(324) # 2nd row second image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-4])
    ax4.plot(x, y,'r')
    ax4.plot(x_min,y_min,'o')
    ax4.plot(x_max,y_max,'o')
    ax4.set_xlabel('year')
    ax4.set_ylabel('Index Close')
    ax4.set_title(plot_title[-4])
    ax4.fill_between(x,y,facecolor='red')
    ax4.axis([x[1], x[-1], 0.8 * y_min, 1.1 * y_max])

    ax5 = fig.add_subplot(325) # 3rd row first image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-5])
    ax5.plot(x, y,'r')
    ax5.plot(x_min,y_min,'o')
    ax5.plot(x_max,y_max,'o')
    ax5.set_xlabel('year')
    ax5.set_ylabel('Index Close')
    ax5.set_title(plot_title[-5])
    ax5.fill_between(x,y,facecolor='red')
    ax5.axis([x[1], x[-1], 0.8 * y_min, 1.1 * y_max])

    ax6 = fig.add_subplot(326) # 3rd row second image
    x,y,x_min, y_min, x_max, y_max = min_max(df,time_slice[-6])
    ax6.plot(x, y,'r')
    ax6.plot(x_min,y_min,'o')
    ax6.plot(x_max,y_max,'o')
    ax6.set_xlabel('year')
    ax6.set_ylabel('Index Close')
    ax6.set_title(plot_title[-6])
    ax6.fill_between(x,y,facecolor='red')
    ax6.axis([x[1], x[-1], 0.8 * y_min, 1.1 * y_max])

    plt.tight_layout()
    plt.savefig(image)