Paste the following points in text box "Control points: U V X Y"
and press button "Adjust function"

0	0	30.0788	50.0105
0	1	29.4943	50.8215
0	2	28.7313	51.5472
1	0	30.8164	50.5469
1	1	30.1616	51.4939
1	2	29.5102	52.2476
2	0	31.5408	51.2043
2	1	30.9007	52.0317
2	2	30.4672	52.7432

Paste the following points in text box "Input: U V"
and press button "Apply function"

0.5	0.4
1.3	0.7