Table 3.

Comparison of measured and actual lengths.

No.	2	47	80	88	91	94	102	111	192	203
Measured length (m)	2.39	0.12	1.74	0.33	2.30	0.25	2.56	3.23	1.00	3.61
Actual length (m)	2.40	0.13	1.75	0.35	2.32	0.27	2.55	3.25	1.02	3.59
Absolute error (cm)	1	1	1	2	2	2	1	2	2	2
Relative error (%)	0.4	7.7	0.6	5.7	0.9	7.4	0.4	0.6	2	0.6
Average error (%)	2.6%