a   b   i  x          y          o2   o3
pan pan 1  0.34679014 0.72680286 1001 2001
eks pan 2  0.75867996 0.52215111 1002 2002
wye wye 3  0.20460331 0.33831853 1003 2003
eks wye 4  0.38139939 0.13418874 1004 2004
wye pan 5  0.57328892 0.86362447 1005 2005
zee pan 6  0.52712616 0.49322129 1006 2006
eks zee 7  0.61178406 0.18788492 1007 2007
zee wye 8  0.59855401 0.97618139 1008 2008
hat wye 9  0.03144188 0.74955076 1009 2009
pan wye 10 0.50262601 0.95261836 1010 2010
