on my version of Excel you don't have the option of scaling the x and y axes to the same value on the screen. You can put numbers in but on the axes on the screen display have arbitrary values. I've plotted them but have to "pull one of the axes" to get an approximate square grid pattern. I've tried plotting the numbers in Powerpoint but can't set my version up for "circle centre positioning" so that's tedious as well.

Vic Thompson.