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Fig. 4. Supercontracted properties of Araneus MA silk. Note that the
individual samples were not tested to failure, but to the highest strain
possible with each experimental setup. (A) The complete data set; (B) the
average behaviour of the data set. Predicted values were averaged from all the
curves for which a value was available. Filled circles represent values
averaged from all 12 tests and open circles represent values averaged from all
tests for which a value at that extension was available. The numbers above
each data point are the number of curves included in the average. The
calculated average behaviour is fitted to the fourth order polynomial,
450.05x4–310.64x3+109.49x2–4.29x+0.22,
r2=1. Error bars are one standard deviation. Each sample
was from a different spider.