# add 68% and 95% contours corresponding to
# a gaussian H0 prior/likelihood
# Values from 1903.07603

if (name == 'H_0') or (second_name == 'H_0'):

    center=74.03
    sigma=1.42
    contour_color = info.MP_color['Orange']
    contour_alpha = 0.5

    # add vertical contours when H0 is on the x axis
    if second_name == 'H_0':
        x68 = [center-sigma,center+sigma]
        x95 = [center-2.*sigma,center+2.*sigma]
        y1 = info.extent[2]
        y2 = info.extent[3]
        ax2dsub.fill_between(x95,
                             y1,
                             y2,
                             facecolor=contour_color[0],
                             edgecolor=contour_color[1],
                             linewidth=1,
                             alpha=contour_alpha)
        ax2dsub.fill_between(x68,
                             y1,
                             y2,
                             color=contour_color[1],
                             alpha=contour_alpha)

    # add horizontal contours when H0 is on the y axis
    if name == 'H_0':
        y68_1 = center-sigma
        y68_2 = center+sigma
        y95_1 = center-2.*sigma
        y95_2 = center+2.*sigma
        xx = [info.extent[0],info.extent[1]]
        ax2dsub.fill_between(xx,
                             y95_1,
                             y95_2,
                             facecolor=contour_color[0],
                             edgecolor=contour_color[1],
                             linewidth=1,
                             alpha=contour_alpha)
        ax2dsub.fill_between(xx,
                             y68_1,
                             y68_2,
                             color=contour_color[1],
                             alpha=contour_alpha)
