a   b   i x          y          c          s
pan pan 1 0.34679014 0.72680286 0.98078528 0.19509032
eks pan 2 0.75867996 0.52215111 0.92387953 0.38268343
wye wye 3 0.20460331 0.33831853 0.83146961 0.55557023
eks wye 4 0.38139939 0.13418874 0.70710678 0.70710678
