I have absolutely no idea how you want them plotted.
Try this:
I=[116 207 414 611 909 1009 951 909 805 615 311 120];
Ta=[29.164 30.256 31.186 32.237 33.127 34.137 35.148 37.129 36.119 35.148 34.137 33.127];
figure
plot(I, Ta, '-p')
grid
txtc = sprintfc('\\leftarrow(%g, %g)', [I; Ta].');
text(I, Ta, txtc, 'HorizontalAlignment','left', 'VerticalAlignment','middle', 'FontSize',8)
This should provide everything you need in the event that you want a different sort of plot.
Make appropriate changes to get the result you want.
