Plotting Circles onto Mercator Projection

I'm trying to plot some points/circles onto a mercator projection. I have a set of points that I'm trying to iterate through and then plot using viscircles(). First of all I know there is an issue with my for loop/iteration method and I'm also unsure how to map these circles onto the projection using the same scale, it seems they plot onto a separate grid. Any help would be appreciated.

clc;
axesm ('mercator', 'Frame', 'on', 'Grid', 'on');
setm(gca,'grid','on','meridianlabel','on','parallellabel','on')
hold on;
Y = [59.48009333,-2.000406383,30.32394415,14.14142775,61.0865661,208.7017845,34.99211074,
    -11.06820382,51.92576036,124.4534127,61.0865661,54.85881019,86.31346951,-15.17434314,
    26.94120238,57.90788095,3.001371616,24.73428577,49.09690232,116.1723159,33.80639443,-8.026121537,14.14142775, 61.0865661];
X = [6, 8, 11, 19, 45, 53, 113, 119, 120, 147, 169, 179, 180, 189, 216, 238, 248, 253, 288, 314, 338, 340, 341, 344];

for r = 1:Y
    for s = 1:X
        centers = [X(s), Y(r)];
        radii = 1;
        viscircles(centers,radii,'Color', 'r');
    end
end
hold off;