x1	u_x1
NaN	NaN
349.881458282299	3.22581203412124
1091.75630976371	10.0656957677807
1613.3856197759	14.8748623193902
2204.22784989065	20.3220484910715
2814.30613039723	25.9472985749307
3392.52144153037	31.2775663057707
3967.88903953802	36.5841213093669
4534.82268880374	41.809560756385
5140.46260811477	47.3940985263982
5612.95750252653	51.7526678407811
