x1	u_x1
NaN	NaN
349.243047751552	3.22000514457995
966.979658217087	8.91524837888303
1526.33663661818	14.0723088884225
2150.04192865188	19.8224527918433
2625.37883370338	24.2048416990402
3316.83887608238	30.5806436979029
3815.67736702666	35.18087436382
4470.18108380486	41.2182464555726
4928.46587477751	45.4395796497998
5516.81453263452	50.8638670957923
