a       b   i  x          y
(error) pan 1  0.34680000 0.72680286
(error) pan 2  0.75870000 -0.52215111
(error) wye 3  0.20460000 0.33831853
(error) wye 4  0.38140000 -0.13418874
(error) pan 5  0.57330000 0.86362447
(error) pan 6  0.52710000 -0.49322129
(error) zee 7  0.61180000 0.18788492
(error) wye 8  0.59860000 0.97618139
(error) wye 9  0.03144000 -0.74955076
(error) wye 10 0.50260000 0.95261836
