i guess i coud do some sort of basic drawing, taking as a situation, your screenshot:
http://img252.imageshack.us/my.php?image=nomo1kh5.jpg
he moved 0.4 km in 3 minutes, right?
so:
keep in mind that this edited screen was made in seconds, with a broad line for easy recognition. I paid atention to the way the line should cross the nomograph, but i didnt pay too much atention of to the actual values.
