x1	u_x1
NaN	NaN
1.48313392551468	0.0119806281655605
6.23641314201791	0.0139531812670837
9.9720061979675	0.016609474975044
13.697152081512	0.0198179940713589
17.9916917851372	0.0239168582057134
22.2266621359069	0.0282037800739956
26.0237289923025	0.032174554625201
30.2679205793566	0.0367056436691915
33.8505417619055	0.0405832102902705
37.7672821760079	0.0448625406621052
