Water content of bean root cells (Y) versus distance from tip (X).  
Sample data file, CurveExpert 1.30
Uncertainties associated with each data point are fictional.

Distance (in tens)  Content (in tens)
======================================

0.05	0.13	0.03
0.15	0.13	0.03
0.25	0.19	0.03
0.35	0.34	0.03
0.45	0.53	0.1
0.55    0.71    0.07
0.65    1.06    0.05
0.75	1.6	0.1
0.85    1.64    0.09
0.95    1.83    0.15
1.05    2.09    0.25
1.15    2.05    0.1
1.25    2.13    0.4
1.35    2.12    0.2
1.45    2.09    0.3