a       b   i  x         y
(error) pan 1  3.468e-01 0.7268028627434533
(error) pan 2  7.587e-01 -0.5221511083334797
(error) wye 3  2.046e-01 0.33831852551664776
(error) wye 4  3.814e-01 -0.13418874328430463
(error) pan 5  5.733e-01 0.8636244699032729
(error) pan 6  5.271e-01 -0.49322128674835697
(error) zee 7  6.118e-01 0.1878849191181694
(error) wye 8  5.986e-01 0.976181385699006
(error) wye 9  3.144e-02 -0.7495507603507059
(error) wye 10 5.026e-01 0.9526183602969864
