Form in XPMC chart

Could you give a better explanation about the form line in the XPMC chart? I don’t completely understand the explanations given in the supplied links about form. e.g. it a few months ago my form was -5.6 with a blue line, but recently my form was +9.9 with a blue line. So what does the negative and positive number mean and also the height of these numbers?

We look at the colour in multiple dimensions, not just what the form number is. You could have a negative form and be fresh if the recovery load is made up of mostly of low recovery load. It takes more low XSS as compared to high and peak XSS. Check out the glossary on Training Status. It’s a bit harder to interpret unfortunately when you have 3 dimensions rather that just one.